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8^x-9*2^(x+1)+2^(5-x)=0

8^x-9*2^(x+1)+2^(5-x)=0 la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
 x      x + 1    5 - x    
8  - 9*2      + 2      = 0
25x+(92x+1+8x)=02^{5 - x} + \left(- 9 \cdot 2^{x + 1} + 8^{x}\right) = 0
Gráfica
05-10-51015-100000000000100000000000
Respuesta rápida [src]
x1 = 1/2
x1=12x_{1} = \frac{1}{2}
x2 = 2
x2=2x_{2} = 2
     log(4)    pi*I 
x3 = ------ + ------
     log(2)   log(2)
x3=log(4)log(2)+iπlog(2)x_{3} = \frac{\log{\left(4 \right)}}{\log{\left(2 \right)}} + \frac{i \pi}{\log{\left(2 \right)}}
     1    pi*I 
x4 = - + ------
     2   log(2)
x4=12+iπlog(2)x_{4} = \frac{1}{2} + \frac{i \pi}{\log{\left(2 \right)}}
x4 = 1/2 + i*pi/log(2)
Suma y producto de raíces [src]
suma
          log(4)    pi*I    1    pi*I 
1/2 + 2 + ------ + ------ + - + ------
          log(2)   log(2)   2   log(2)
(12+iπlog(2))+((12+2)+(log(4)log(2)+iπlog(2)))\left(\frac{1}{2} + \frac{i \pi}{\log{\left(2 \right)}}\right) + \left(\left(\frac{1}{2} + 2\right) + \left(\frac{\log{\left(4 \right)}}{\log{\left(2 \right)}} + \frac{i \pi}{\log{\left(2 \right)}}\right)\right)
=
    log(4)   2*pi*I
3 + ------ + ------
    log(2)   log(2)
log(4)log(2)+3+2iπlog(2)\frac{\log{\left(4 \right)}}{\log{\left(2 \right)}} + 3 + \frac{2 i \pi}{\log{\left(2 \right)}}
producto
2 /log(4)    pi*I \ /1    pi*I \
-*|------ + ------|*|- + ------|
2 \log(2)   log(2)/ \2   log(2)/
22(log(4)log(2)+iπlog(2))(12+iπlog(2))\frac{2}{2} \left(\frac{\log{\left(4 \right)}}{\log{\left(2 \right)}} + \frac{i \pi}{\log{\left(2 \right)}}\right) \left(\frac{1}{2} + \frac{i \pi}{\log{\left(2 \right)}}\right)
=
(pi*I + log(4))*(2*pi*I + log(2))
---------------------------------
                 2               
            2*log (2)            
(log(2)+2iπ)(log(4)+iπ)2log(2)2\frac{\left(\log{\left(2 \right)} + 2 i \pi\right) \left(\log{\left(4 \right)} + i \pi\right)}{2 \log{\left(2 \right)}^{2}}
(pi*i + log(4))*(2*pi*i + log(2))/(2*log(2)^2)
Respuesta numérica [src]
x1 = 0.5
x2 = 2.0
x3 = 2.0 + 4.53236014182719*i
x4 = 0.5 + 4.53236014182719*i
x4 = 0.5 + 4.53236014182719*i
Gráfico
8^x-9*2^(x+1)+2^(5-x)=0 la ecuación