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x^4+x^3+x^2+x+1=0

x^4+x^3+x^2+x+1=0 la ecuación

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Solución numérica:

Buscar la solución numérica en el intervalo [, ]

Solución

Ha introducido [src]
 4    3    2            
x  + x  + x  + x + 1 = 0
$$\left(x + \left(x^{2} + \left(x^{4} + x^{3}\right)\right)\right) + 1 = 0$$
Gráfica
Respuesta rápida [src]
                          ___________
             ___         /       ___ 
       1   \/ 5         /  5   \/ 5  
x1 = - - + ----- - I*  /   - + ----- 
       4     4       \/    8     8   
$$x_{1} = - \frac{1}{4} + \frac{\sqrt{5}}{4} - i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}$$
                          ___________
             ___         /       ___ 
       1   \/ 5         /  5   \/ 5  
x2 = - - + ----- + I*  /   - + ----- 
       4     4       \/    8     8   
$$x_{2} = - \frac{1}{4} + \frac{\sqrt{5}}{4} + i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}$$
                          ___________
             ___         /       ___ 
       1   \/ 5         /  5   \/ 5  
x3 = - - - ----- - I*  /   - - ----- 
       4     4       \/    8     8   
$$x_{3} = - \frac{\sqrt{5}}{4} - \frac{1}{4} - i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}$$
                          ___________
             ___         /       ___ 
       1   \/ 5         /  5   \/ 5  
x4 = - - - ----- + I*  /   - - ----- 
       4     4       \/    8     8   
$$x_{4} = - \frac{\sqrt{5}}{4} - \frac{1}{4} + i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}$$
x4 = -sqrt(5)/4 - 1/4 + i*sqrt(5/8 - sqrt(5)/8)
Suma y producto de raíces [src]
suma
                     ___________                        ___________                        ___________                        ___________
        ___         /       ___            ___         /       ___            ___         /       ___            ___         /       ___ 
  1   \/ 5         /  5   \/ 5       1   \/ 5         /  5   \/ 5       1   \/ 5         /  5   \/ 5       1   \/ 5         /  5   \/ 5  
- - + ----- - I*  /   - + -----  + - - + ----- + I*  /   - + -----  + - - - ----- - I*  /   - - -----  + - - - ----- + I*  /   - - ----- 
  4     4       \/    8     8        4     4       \/    8     8        4     4       \/    8     8        4     4       \/    8     8   
$$\left(\left(- \frac{\sqrt{5}}{4} - \frac{1}{4} - i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}\right) + \left(\left(- \frac{1}{4} + \frac{\sqrt{5}}{4} - i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}\right) + \left(- \frac{1}{4} + \frac{\sqrt{5}}{4} + i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}\right)\right)\right) + \left(- \frac{\sqrt{5}}{4} - \frac{1}{4} + i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}\right)$$
=
-1
$$-1$$
producto
/                     ___________\ /                     ___________\ /                     ___________\ /                     ___________\
|        ___         /       ___ | |        ___         /       ___ | |        ___         /       ___ | |        ___         /       ___ |
|  1   \/ 5         /  5   \/ 5  | |  1   \/ 5         /  5   \/ 5  | |  1   \/ 5         /  5   \/ 5  | |  1   \/ 5         /  5   \/ 5  |
|- - + ----- - I*  /   - + ----- |*|- - + ----- + I*  /   - + ----- |*|- - - ----- - I*  /   - - ----- |*|- - - ----- + I*  /   - - ----- |
\  4     4       \/    8     8   / \  4     4       \/    8     8   / \  4     4       \/    8     8   / \  4     4       \/    8     8   /
$$\left(- \frac{1}{4} + \frac{\sqrt{5}}{4} - i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}\right) \left(- \frac{1}{4} + \frac{\sqrt{5}}{4} + i \sqrt{\frac{\sqrt{5}}{8} + \frac{5}{8}}\right) \left(- \frac{\sqrt{5}}{4} - \frac{1}{4} - i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}\right) \left(- \frac{\sqrt{5}}{4} - \frac{1}{4} + i \sqrt{\frac{5}{8} - \frac{\sqrt{5}}{8}}\right)$$
=
1
$$1$$
1
Respuesta numérica [src]
x1 = 0.309016994374947 - 0.951056516295154*i
x2 = 0.309016994374947 + 0.951056516295154*i
x3 = -0.809016994374947 + 0.587785252292473*i
x4 = -0.809016994374947 - 0.587785252292473*i
x4 = -0.809016994374947 - 0.587785252292473*i
Gráfico
x^4+x^3+x^2+x+1=0 la ecuación