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x*sqrt((sqrtx+1)/(sqrtx-2))

Derivada de x*sqrt((sqrtx+1)/(sqrtx-2))

Función f() - derivada -er orden en el punto
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Gráfico:

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Definida a trozos:

Solución

Ha introducido [src]
        ___________
       /   ___     
      /  \/ x  + 1 
x*   /   --------- 
    /      ___     
  \/     \/ x  - 2 
xx+1x2x \sqrt{\frac{\sqrt{x} + 1}{\sqrt{x} - 2}}
x*sqrt((sqrt(x) + 1)/(sqrt(x) - 2))
Solución detallada
  1. Se aplica la regla de la derivada de una multiplicación:

    ddxf(x)g(x)=f(x)ddxg(x)+g(x)ddxf(x)\frac{d}{d x} f{\left(x \right)} g{\left(x \right)} = f{\left(x \right)} \frac{d}{d x} g{\left(x \right)} + g{\left(x \right)} \frac{d}{d x} f{\left(x \right)}

    f(x)=xf{\left(x \right)} = x; calculamos ddxf(x)\frac{d}{d x} f{\left(x \right)}:

    1. Según el principio, aplicamos: xx tenemos 11

    g(x)=x+1x2g{\left(x \right)} = \sqrt{\frac{\sqrt{x} + 1}{\sqrt{x} - 2}}; calculamos ddxg(x)\frac{d}{d x} g{\left(x \right)}:

    1. Sustituimos u=x+1x2u = \frac{\sqrt{x} + 1}{\sqrt{x} - 2}.

    2. Según el principio, aplicamos: u\sqrt{u} tenemos 12u\frac{1}{2 \sqrt{u}}

    3. Luego se aplica una cadena de reglas. Multiplicamos por ddxx+1x2\frac{d}{d x} \frac{\sqrt{x} + 1}{\sqrt{x} - 2}:

      1. Se aplica la regla de la derivada parcial:

        ddxf(x)g(x)=f(x)ddxg(x)+g(x)ddxf(x)g2(x)\frac{d}{d x} \frac{f{\left(x \right)}}{g{\left(x \right)}} = \frac{- f{\left(x \right)} \frac{d}{d x} g{\left(x \right)} + g{\left(x \right)} \frac{d}{d x} f{\left(x \right)}}{g^{2}{\left(x \right)}}

        f(x)=x+1f{\left(x \right)} = \sqrt{x} + 1 y g(x)=x2g{\left(x \right)} = \sqrt{x} - 2.

        Para calcular ddxf(x)\frac{d}{d x} f{\left(x \right)}:

        1. diferenciamos x+1\sqrt{x} + 1 miembro por miembro:

          1. La derivada de una constante 11 es igual a cero.

          2. Según el principio, aplicamos: x\sqrt{x} tenemos 12x\frac{1}{2 \sqrt{x}}

          Como resultado de: 12x\frac{1}{2 \sqrt{x}}

        Para calcular ddxg(x)\frac{d}{d x} g{\left(x \right)}:

        1. diferenciamos x2\sqrt{x} - 2 miembro por miembro:

          1. La derivada de una constante 2-2 es igual a cero.

          2. Según el principio, aplicamos: x\sqrt{x} tenemos 12x\frac{1}{2 \sqrt{x}}

          Como resultado de: 12x\frac{1}{2 \sqrt{x}}

        Ahora aplicamos la regla de la derivada de una divesión:

        x22xx+12x(x2)2\frac{\frac{\sqrt{x} - 2}{2 \sqrt{x}} - \frac{\sqrt{x} + 1}{2 \sqrt{x}}}{\left(\sqrt{x} - 2\right)^{2}}

      Como resultado de la secuencia de reglas:

      x22xx+12x2x+1x2(x2)2\frac{\frac{\sqrt{x} - 2}{2 \sqrt{x}} - \frac{\sqrt{x} + 1}{2 \sqrt{x}}}{2 \sqrt{\frac{\sqrt{x} + 1}{\sqrt{x} - 2}} \left(\sqrt{x} - 2\right)^{2}}

    Como resultado de: x(x22xx+12x)2x+1x2(x2)2+x+1x2\frac{x \left(\frac{\sqrt{x} - 2}{2 \sqrt{x}} - \frac{\sqrt{x} + 1}{2 \sqrt{x}}\right)}{2 \sqrt{\frac{\sqrt{x} + 1}{\sqrt{x} - 2}} \left(\sqrt{x} - 2\right)^{2}} + \sqrt{\frac{\sqrt{x} + 1}{\sqrt{x} - 2}}

  2. Simplificamos:

    7x4+x2x+1x2(4x+x+4)\frac{- \frac{7 \sqrt{x}}{4} + x - 2}{\sqrt{\frac{\sqrt{x} + 1}{\sqrt{x} - 2}} \left(- 4 \sqrt{x} + x + 4\right)}


Respuesta:

7x4+x2x+1x2(4x+x+4)\frac{- \frac{7 \sqrt{x}}{4} + x - 2}{\sqrt{\frac{\sqrt{x} + 1}{\sqrt{x} - 2}} \left(- 4 \sqrt{x} + x + 4\right)}

Gráfica
02468-8-6-4-2-1010-200200
Primera derivada [src]
                            ___________                                                         
                           /   ___                  /                             ___          \
                          /  \/ x  + 1  /  ___    \ |         1                 \/ x  + 1      |
                    x*   /   --------- *\\/ x  - 2/*|------------------- - --------------------|
      ___________       /      ___                  |    ___ /  ___    \                      2|
     /   ___          \/     \/ x  - 2              |4*\/ x *\\/ x  - 2/       ___ /  ___    \ |
    /  \/ x  + 1                                    \                      4*\/ x *\\/ x  - 2/ /
   /   ---------  + ----------------------------------------------------------------------------
  /      ___                                           ___                                      
\/     \/ x  - 2                                     \/ x  + 1                                  
xx+1x2(x2)(14x(x2)x+14x(x2)2)x+1+x+1x2\frac{x \sqrt{\frac{\sqrt{x} + 1}{\sqrt{x} - 2}} \left(\sqrt{x} - 2\right) \left(\frac{1}{4 \sqrt{x} \left(\sqrt{x} - 2\right)} - \frac{\sqrt{x} + 1}{4 \sqrt{x} \left(\sqrt{x} - 2\right)^{2}}\right)}{\sqrt{x} + 1} + \sqrt{\frac{\sqrt{x} + 1}{\sqrt{x} - 2}}
Segunda derivada [src]
                   /  /                                          2                                                                                \                     \
                   |  |                          /          ___ \      /          ___ \     /          ___ \                                      |     /          ___ \|
                   |  |                          |    1 + \/ x  |      |    1 + \/ x  |     |    1 + \/ x  |                                      |     |    1 + \/ x  ||
      ____________ |  |                          |1 - ----------|    2*|1 - ----------|   2*|1 - ----------|                                      |   8*|1 - ----------||
     /       ___   |  |                          |           ___|      |           ___|     |           ___|       /      ___\        /      ___\ |     |           ___||
    /  1 + \/ x    |  |   2           4          \    -2 + \/ x /      \    -2 + \/ x /     \    -2 + \/ x /     2*\1 + \/ x /      4*\1 + \/ x / |     \    -2 + \/ x /|
   /   ---------- *|x*|- ---- - -------------- + ----------------- - ------------------ + ------------------ + ----------------- + ---------------| + ------------------|
  /           ___  |  |   3/2     /       ___\       /      ___\         /      ___\          /       ___\      3/2 /       ___\                 2|           ___       |
\/     -2 + \/ x   |  |  x      x*\-2 + \/ x /     x*\1 + \/ x /       x*\1 + \/ x /        x*\-2 + \/ x /     x   *\-2 + \/ x /     /       ___\ |         \/ x        |
                   \  \                                                                                                            x*\-2 + \/ x / /                     /
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                                                                              16*\1 + \/ x /                                                                             
x+1x2(x((1x+1x2)2x(x+1)2(1x+1x2)x(x+1)+2(1x+1x2)x(x2)4x(x2)+4(x+1)x(x2)22x32+2(x+1)x32(x2))+8(1x+1x2)x)16(x+1)\frac{\sqrt{\frac{\sqrt{x} + 1}{\sqrt{x} - 2}} \left(x \left(\frac{\left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)^{2}}{x \left(\sqrt{x} + 1\right)} - \frac{2 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)}{x \left(\sqrt{x} + 1\right)} + \frac{2 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)}{x \left(\sqrt{x} - 2\right)} - \frac{4}{x \left(\sqrt{x} - 2\right)} + \frac{4 \left(\sqrt{x} + 1\right)}{x \left(\sqrt{x} - 2\right)^{2}} - \frac{2}{x^{\frac{3}{2}}} + \frac{2 \left(\sqrt{x} + 1\right)}{x^{\frac{3}{2}} \left(\sqrt{x} - 2\right)}\right) + \frac{8 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)}{\sqrt{x}}\right)}{16 \left(\sqrt{x} + 1\right)}
Tercera derivada [src]
                   /           /                                                              3                                                                 /                                  ___          /      ___\ \                     2                                                                    /                                  ___          /      ___\ \                                     /          ___ \ /                                  ___          /      ___\ \                          2     \                                                             2                                                            \
                   |           |                                              /          ___ \                                                                  | 1           2              1 + \/ x         2*\1 + \/ x / |     /          ___ \      /          ___ \     /          ___ \     /          ___ \     | 1           2              1 + \/ x         2*\1 + \/ x / |           /          ___ \          |    1 + \/ x  | | 1           2              1 + \/ x         2*\1 + \/ x / |          /          ___ \      |                       /          ___ \      /          ___ \       /          ___ \                                      |
                   |           |                                              |    1 + \/ x  |                                                                8*|---- + -------------- - ----------------- - ---------------|     |    1 + \/ x  |      |    1 + \/ x  |     |    1 + \/ x  |     |    1 + \/ x  |   8*|---- + -------------- - ----------------- - ---------------|           |    1 + \/ x  |        6*|1 - ----------|*|---- + -------------- - ----------------- - ---------------|          |    1 + \/ x  |      |                       |    1 + \/ x  |      |    1 + \/ x  |       |    1 + \/ x  |                                      |
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     /       ___   |           |                                              |           ___|        /      ___\         /      ___\          /      ___\      |x      x*\-2 + \/ x /   x   *\-2 + \/ x /     /       ___\ |     |           ___|      |           ___|     |           ___|     |           ___|     |x      x*\-2 + \/ x /   x   *\-2 + \/ x /     /       ___\ |           |           ___|          \    -2 + \/ x / |x      x*\-2 + \/ x /   x   *\-2 + \/ x /     /       ___\ |          |           ___|      |                       |           ___|      |           ___|       |           ___|        /      ___\        /      ___\|
    /  1 + \/ x    |   24      | 12           24                 24           \    -2 + \/ x /     24*\1 + \/ x /      24*\1 + \/ x /       12*\1 + \/ x /      \                                            x*\-2 + \/ x / /     \    -2 + \/ x /      \    -2 + \/ x /     \    -2 + \/ x /     \    -2 + \/ x /     \                                            x*\-2 + \/ x / /           \    -2 + \/ x /                           \                                            x*\-2 + \/ x / /          \    -2 + \/ x /      |         48            \    -2 + \/ x /      \    -2 + \/ x /       \    -2 + \/ x /     24*\1 + \/ x /     48*\1 + \/ x /|
   /   ---------- *|- ---- + x*|---- + --------------- + ------------------ + ----------------- - ---------------- - ------------------ - ----------------- - --------------------------------------------------------------- - ------------------- - ------------------ + ------------------ + ------------------ + --------------------------------------------------------------- - ----------------------------- - -------------------------------------------------------------------------------- + -----------------------------| - -------------- - ------------------- + -------------------- + ------------------- + ----------------- + ---------------|
  /           ___  |   3/2     | 5/2    2 /       ___\                    2                   2                  2                    3    5/2 /       ___\                            ___ /       ___\                                          2      2 /       ___\        2 /      ___\                     2                             ___ /      ___\                           3/2 /      ___\ /       ___\                                    ___ /      ___\                                    3/2 /      ___\ /       ___\|     /       ___\        /      ___\           /      ___\            /       ___\      3/2 /       ___\                 2|
\/     -2 + \/ x   |  x        |x      x *\-2 + \/ x /    3/2 /       ___\     3/2 /      ___\     2 /       ___\     3/2 /       ___\    x   *\-2 + \/ x /                          \/ x *\-2 + \/ x /                           3/2 /      ___\      x *\-2 + \/ x /       x *\1 + \/ x /      3/2 /      ___\                            \/ x *\1 + \/ x /                          x   *\1 + \/ x /*\-2 + \/ x /                                  \/ x *\1 + \/ x /                                   x   *\1 + \/ x /*\-2 + \/ x /|   x*\-2 + \/ x /      x*\1 + \/ x /         x*\1 + \/ x /          x*\-2 + \/ x /     x   *\-2 + \/ x /     /       ___\ |
                   \           \                         x   *\-2 + \/ x /    x   *\1 + \/ x /    x *\-2 + \/ x /    x   *\-2 + \/ x /                                                                                           x   *\1 + \/ x /                                               x   *\1 + \/ x /                                                                                                                                                                                                                       /                                                                                                           x*\-2 + \/ x / /
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                                                                                                                                                                                                                                                                                                                              /      ___\                                                                                                                                                                                                                                                                                                                          
                                                                                                                                                                                                                                                                                                                           64*\1 + \/ x /                                                                                                                                                                                                                                                                                                                          
x+1x2(x(4(1x+1x2)x2(x+1)4(1x+1x2)x2(x2)+24x2(x2)24(x+1)x2(x2)26(1x+1x2)(2x(x2)2(x+1)x(x2)2+1x32x+1x32(x2))x(x+1)+8(2x(x2)2(x+1)x(x2)2+1x32x+1x32(x2))x(x+1)8(2x(x2)2(x+1)x(x2)2+1x32x+1x32(x2))x(x2)+(1x+1x2)3x32(x+1)26(1x+1x2)2x32(x+1)2+6(1x+1x2)2x32(x2)(x+1)+8(1x+1x2)x32(x+1)28(1x+1x2)x32(x2)(x+1)+24x32(x2)224(x+1)x32(x2)3+12x5212(x+1)x52(x2))+12(1x+1x2)2x(x+1)24(1x+1x2)x(x+1)+24(1x+1x2)x(x2)48x(x2)+48(x+1)x(x2)224x32+24(x+1)x32(x2))64(x+1)\frac{\sqrt{\frac{\sqrt{x} + 1}{\sqrt{x} - 2}} \left(x \left(\frac{4 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)}{x^{2} \left(\sqrt{x} + 1\right)} - \frac{4 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)}{x^{2} \left(\sqrt{x} - 2\right)} + \frac{24}{x^{2} \left(\sqrt{x} - 2\right)} - \frac{24 \left(\sqrt{x} + 1\right)}{x^{2} \left(\sqrt{x} - 2\right)^{2}} - \frac{6 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right) \left(\frac{2}{x \left(\sqrt{x} - 2\right)} - \frac{2 \left(\sqrt{x} + 1\right)}{x \left(\sqrt{x} - 2\right)^{2}} + \frac{1}{x^{\frac{3}{2}}} - \frac{\sqrt{x} + 1}{x^{\frac{3}{2}} \left(\sqrt{x} - 2\right)}\right)}{\sqrt{x} \left(\sqrt{x} + 1\right)} + \frac{8 \left(\frac{2}{x \left(\sqrt{x} - 2\right)} - \frac{2 \left(\sqrt{x} + 1\right)}{x \left(\sqrt{x} - 2\right)^{2}} + \frac{1}{x^{\frac{3}{2}}} - \frac{\sqrt{x} + 1}{x^{\frac{3}{2}} \left(\sqrt{x} - 2\right)}\right)}{\sqrt{x} \left(\sqrt{x} + 1\right)} - \frac{8 \left(\frac{2}{x \left(\sqrt{x} - 2\right)} - \frac{2 \left(\sqrt{x} + 1\right)}{x \left(\sqrt{x} - 2\right)^{2}} + \frac{1}{x^{\frac{3}{2}}} - \frac{\sqrt{x} + 1}{x^{\frac{3}{2}} \left(\sqrt{x} - 2\right)}\right)}{\sqrt{x} \left(\sqrt{x} - 2\right)} + \frac{\left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)^{3}}{x^{\frac{3}{2}} \left(\sqrt{x} + 1\right)^{2}} - \frac{6 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)^{2}}{x^{\frac{3}{2}} \left(\sqrt{x} + 1\right)^{2}} + \frac{6 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)^{2}}{x^{\frac{3}{2}} \left(\sqrt{x} - 2\right) \left(\sqrt{x} + 1\right)} + \frac{8 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)}{x^{\frac{3}{2}} \left(\sqrt{x} + 1\right)^{2}} - \frac{8 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)}{x^{\frac{3}{2}} \left(\sqrt{x} - 2\right) \left(\sqrt{x} + 1\right)} + \frac{24}{x^{\frac{3}{2}} \left(\sqrt{x} - 2\right)^{2}} - \frac{24 \left(\sqrt{x} + 1\right)}{x^{\frac{3}{2}} \left(\sqrt{x} - 2\right)^{3}} + \frac{12}{x^{\frac{5}{2}}} - \frac{12 \left(\sqrt{x} + 1\right)}{x^{\frac{5}{2}} \left(\sqrt{x} - 2\right)}\right) + \frac{12 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)^{2}}{x \left(\sqrt{x} + 1\right)} - \frac{24 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)}{x \left(\sqrt{x} + 1\right)} + \frac{24 \left(1 - \frac{\sqrt{x} + 1}{\sqrt{x} - 2}\right)}{x \left(\sqrt{x} - 2\right)} - \frac{48}{x \left(\sqrt{x} - 2\right)} + \frac{48 \left(\sqrt{x} + 1\right)}{x \left(\sqrt{x} - 2\right)^{2}} - \frac{24}{x^{\frac{3}{2}}} + \frac{24 \left(\sqrt{x} + 1\right)}{x^{\frac{3}{2}} \left(\sqrt{x} - 2\right)}\right)}{64 \left(\sqrt{x} + 1\right)}
Gráfico
Derivada de x*sqrt((sqrtx+1)/(sqrtx-2))