exp(-15*10^(-4)*x)=0.171 la ecuación
El profesor se sorprenderá mucho al ver tu solución correcta😉
Solución
Solución detallada
Tenemos la ecuación:
$$e^{- 0.0015 x} = \frac{171}{1000}$$
o
$$- \frac{171}{1000} + e^{- 0.0015 x} = 0$$
o
$$0.998501124437711^{x} = \frac{171}{1000}$$
o
$$0.998501124437711^{x} = \frac{171}{1000}$$
- es la ecuación exponencial más simple
Sustituimos
$$v = 0.998501124437711^{x}$$
obtendremos
$$v - \frac{171}{1000} = 0$$
o
$$v - \frac{171}{1000} = 0$$
Transportamos los términos libres (sin v)
del miembro izquierdo al derecho, obtenemos:
$$v = \frac{171}{1000}$$
Obtenemos la respuesta: v = 171/1000
hacemos cambio inverso
$$0.998501124437711^{x} = v$$
o
$$x = - 666.666666666672 \log{\left(v \right)}$$
Entonces la respuesta definitiva es
$$x_{1} = \frac{\log{\left(\frac{171}{1000} \right)}}{\log{\left(0.998501124437711 \right)}} = 1177.39448165299$$
Suma y producto de raíces
[src]
1177.39448165298 + 1177.39448165298 - 4188.79020478639*I + 1177.39448165298 + 4188.79020478639*I
$$\left(1177.39448165298 + \left(1177.39448165298 - 4188.79020478639 i\right)\right) + \left(1177.39448165298 + 4188.79020478639 i\right)$$
$$3532.18344495895$$
1177.39448165298*(1177.39448165298 - 4188.79020478639*I)*(1177.39448165298 + 4188.79020478639*I)
$$1177.39448165298 \left(1177.39448165298 - 4188.79020478639 i\right) \left(1177.39448165298 + 4188.79020478639 i\right)$$
22290692701.7233 - 9.5367431640625e-7*I
$$22290692701.7233 - 9.5367431640625 \cdot 10^{-7} i$$
22290692701.7233 - 9.5367431640625e-7*i
$$x_{1} = 1177.39448165298$$
x2 = 1177.39448165298 - 4188.79020478639*I
$$x_{2} = 1177.39448165298 - 4188.79020478639 i$$
x3 = 1177.39448165298 + 4188.79020478639*I
$$x_{3} = 1177.39448165298 + 4188.79020478639 i$$
x3 = 1177.39448165298 + 4188.79020478639*i
x2 = 1177.39448165298 - 4188.79020478639*i
x3 = 1177.39448165298 + 4188.79020478639*i
x3 = 1177.39448165298 + 4188.79020478639*i