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log(3)^(2)*x-7*log(x)-3=0 la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
   2                        
log (3)*x - 7*log(x) - 3 = 0
$$\left(x \log{\left(3 \right)}^{2} - 7 \log{\left(x \right)}\right) - 3 = 0$$
Gráfica
Respuesta rápida [src]
         /    2     -3/7 \
         |-log (3)*e     |
     -7*W|---------------|
         \       7       /
x1 = ---------------------
               2          
            log (3)       
$$x_{1} = - \frac{7 W\left(- \frac{\log{\left(3 \right)}^{2}}{7 e^{\frac{3}{7}}}\right)}{\log{\left(3 \right)}^{2}}$$
         /    2     -3/7     \
         |-log (3)*e         |
     -7*W|---------------, -1|
         \       7           /
x2 = -------------------------
                 2            
              log (3)         
$$x_{2} = - \frac{7 W_{-1}\left(- \frac{\log{\left(3 \right)}^{2}}{7 e^{\frac{3}{7}}}\right)}{\log{\left(3 \right)}^{2}}$$
x2 = -7*LambertW(-exp(-3/7)*log(3^2/7, -1)/log(3)^2)
Suma y producto de raíces [src]
suma
     /    2     -3/7 \      /    2     -3/7     \
     |-log (3)*e     |      |-log (3)*e         |
  7*W|---------------|   7*W|---------------, -1|
     \       7       /      \       7           /
- -------------------- - ------------------------
           2                        2            
        log (3)                  log (3)         
$$- \frac{7 W\left(- \frac{\log{\left(3 \right)}^{2}}{7 e^{\frac{3}{7}}}\right)}{\log{\left(3 \right)}^{2}} - \frac{7 W_{-1}\left(- \frac{\log{\left(3 \right)}^{2}}{7 e^{\frac{3}{7}}}\right)}{\log{\left(3 \right)}^{2}}$$
=
     /    2     -3/7 \      /    2     -3/7     \
     |-log (3)*e     |      |-log (3)*e         |
  7*W|---------------|   7*W|---------------, -1|
     \       7       /      \       7           /
- -------------------- - ------------------------
           2                        2            
        log (3)                  log (3)         
$$- \frac{7 W\left(- \frac{\log{\left(3 \right)}^{2}}{7 e^{\frac{3}{7}}}\right)}{\log{\left(3 \right)}^{2}} - \frac{7 W_{-1}\left(- \frac{\log{\left(3 \right)}^{2}}{7 e^{\frac{3}{7}}}\right)}{\log{\left(3 \right)}^{2}}$$
producto
    /    2     -3/7 \     /    2     -3/7     \
    |-log (3)*e     |     |-log (3)*e         |
-7*W|---------------| -7*W|---------------, -1|
    \       7       /     \       7           /
---------------------*-------------------------
          2                       2            
       log (3)                 log (3)         
$$- \frac{7 W\left(- \frac{\log{\left(3 \right)}^{2}}{7 e^{\frac{3}{7}}}\right)}{\log{\left(3 \right)}^{2}} \left(- \frac{7 W_{-1}\left(- \frac{\log{\left(3 \right)}^{2}}{7 e^{\frac{3}{7}}}\right)}{\log{\left(3 \right)}^{2}}\right)$$
=
    /    2     -3/7 \  /    2     -3/7     \
    |-log (3)*e     |  |-log (3)*e         |
49*W|---------------|*W|---------------, -1|
    \       7       /  \       7           /
--------------------------------------------
                     4                      
                  log (3)                   
$$\frac{49 W\left(- \frac{\log{\left(3 \right)}^{2}}{7 e^{\frac{3}{7}}}\right) W_{-1}\left(- \frac{\log{\left(3 \right)}^{2}}{7 e^{\frac{3}{7}}}\right)}{\log{\left(3 \right)}^{4}}$$
49*LambertW(-log(3)^2*exp(-3/7)/7)*LambertW(-log(3)^2*exp(-3/7)/7, -1)/log(3)^4
Respuesta numérica [src]
x1 = 19.8025592295783
x2 = 0.740106386150173
x2 = 0.740106386150173