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Lnx^2(tg(x)) la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
   2              
log (x)*tan(x) = 0
$$\log{\left(x \right)}^{2} \tan{\left(x \right)} = 0$$
Solución detallada
Tenemos la ecuación
$$\log{\left(x \right)}^{2} \tan{\left(x \right)} = 0$$
cambiamos
$$\log{\left(x \right)}^{2} \tan{\left(x \right)} = 0$$
$$\log{\left(x \right)}^{2} \tan{\left(x \right)} = 0$$
Sustituimos
$$w = \log{\left(x \right)}$$
Es la ecuación de la forma
a*w^2 + b*w + c = 0

La ecuación cuadrática puede ser resuelta
con la ayuda del discriminante.
Las raíces de la ecuación cuadrática:
$$w_{1} = \frac{\sqrt{D} - b}{2 a}$$
$$w_{2} = \frac{- \sqrt{D} - b}{2 a}$$
donde D = b^2 - 4*a*c es el discriminante.
Como
$$a = \tan{\left(x \right)}$$
$$b = 0$$
$$c = 0$$
, entonces
D = b^2 - 4 * a * c = 

(0)^2 - 4 * (tan(x)) * (0) = 0

Como D = 0 hay sólo una raíz.
w = -b/2a = -0/2/(tan(x))

$$w_{1} = 0$$
hacemos cambio inverso
$$\log{\left(x \right)} = w$$
Tenemos la ecuación
$$\log{\left(x \right)} = w$$
$$\log{\left(x \right)} = w$$
Es la ecuación de la forma:
log(v)=p

Por definición log
v=e^p

entonces
$$x = e^{\frac{w}{1}}$$
simplificamos
$$x = e^{w}$$
sustituimos w:
Gráfica
Respuesta rápida [src]
x1 = 1
$$x_{1} = 1$$
x2 = pi
$$x_{2} = \pi$$
x2 = pi
Suma y producto de raíces [src]
suma
1 + pi
$$1 + \pi$$
=
1 + pi
$$1 + \pi$$
producto
pi
$$\pi$$
=
pi
$$\pi$$
pi
Respuesta numérica [src]
x1 = -65.9734457253857
x2 = -34.5575191894877
x3 = -50.2654824574367
x4 = -21.9911485751286
x5 = 50.2654824574367
x6 = -6.28318530717959
x7 = -12.5663706143592
x8 = -28.2743338823081
x9 = 34.5575191894877
x10 = -97.3893722612836
x11 = 91.106186954104
x12 = -69.1150383789755
x13 = -91.106186954104
x14 = 25.1327412287183
x15 = 43.9822971502571
x16 = -43.9822971502571
x17 = 97.3893722612836
x18 = -84.8230016469244
x19 = 84.8230016469244
x20 = -87.9645943005142
x21 = -100.530964914873
x22 = 56.5486677646163
x23 = 40.8407044966673
x24 = 18.8495559215388
x25 = 62.8318530717959
x26 = -3.14159265358979
x27 = -40.8407044966673
x28 = 47.1238898038469
x29 = 53.4070751110265
x30 = 87.9645943005142
x31 = -18.8495559215388
x32 = 59.6902604182061
x33 = 31.4159265358979
x34 = -53.4070751110265
x35 = 72.2566310325652
x36 = 81.6814089933346
x37 = 9.42477796076938
x38 = 3.14159265358979
x39 = -94.2477796076938
x40 = 28.2743338823081
x41 = -37.6991118430775
x42 = 100.530964914873
x43 = 94.2477796076938
x44 = 21.9911485751286
x45 = -25.1327412287183
x46 = 65.9734457253857
x47 = -31.4159265358979
x48 = -75.398223686155
x49 = 78.5398163397448
x50 = 15.707963267949
x51 = 37.6991118430775
x52 = -47.1238898038469
x53 = -62.8318530717959
x54 = -15.707963267949
x55 = -81.6814089933346
x56 = -78.5398163397448
x57 = 6.28318530717959
x58 = -72.2566310325652
x59 = -56.5486677646163
x60 = -59.6902604182061
x61 = 12.5663706143592
x62 = 69.1150383789755
x63 = 75.398223686155
x64 = -9.42477796076938
x64 = -9.42477796076938