125·2^x-3^y=271 la ecuación
El profesor se sorprenderá mucho al ver tu solución correcta😉
Solución
Solución detallada
Tenemos la ecuación:
$$125 \cdot 2^{x} - 3^{y} = 271$$
o
$$\left(125 \cdot 2^{x} - 3^{y}\right) - 271 = 0$$
o
$$- 3^{y} = 271 - 125 \cdot 2^{x}$$
o
$$3^{y} = 125 \cdot 2^{x} - 271$$
- es la ecuación exponencial más simple
Sustituimos
$$v = 3^{y}$$
obtendremos
$$- 125 \cdot 2^{x} + v + 271 = 0$$
o
$$- 125 \cdot 2^{x} + v + 271 = 0$$
hacemos cambio inverso
$$3^{y} = v$$
o
$$y = \frac{\log{\left(v \right)}}{\log{\left(3 \right)}}$$
Entonces la respuesta definitiva es
$$y_{1} = \frac{\log{\left(125 \cdot 2^{x} - 271 \right)}}{\log{\left(3 \right)}} = \frac{\log{\left(125 \cdot 2^{x} - 271 \right)}}{\log{\left(3 \right)}}$$
/| x|\ / x\
log\|-271 + 125*2 |/ I*arg\-271 + 125*2 /
y1 = -------------------- + --------------------
log(3) log(3)
$$y_{1} = \frac{\log{\left(\left|{125 \cdot 2^{x} - 271}\right| \right)}}{\log{\left(3 \right)}} + \frac{i \arg{\left(125 \cdot 2^{x} - 271 \right)}}{\log{\left(3 \right)}}$$
y1 = log(|125*2^x - 271|)/log(3) + i*arg(125*2^x - 271)/log(3)
Suma y producto de raíces
[src]
/| x|\ / x\
log\|-271 + 125*2 |/ I*arg\-271 + 125*2 /
-------------------- + --------------------
log(3) log(3)
$$\frac{\log{\left(\left|{125 \cdot 2^{x} - 271}\right| \right)}}{\log{\left(3 \right)}} + \frac{i \arg{\left(125 \cdot 2^{x} - 271 \right)}}{\log{\left(3 \right)}}$$
/| x|\ / x\
log\|-271 + 125*2 |/ I*arg\-271 + 125*2 /
-------------------- + --------------------
log(3) log(3)
$$\frac{\log{\left(\left|{125 \cdot 2^{x} - 271}\right| \right)}}{\log{\left(3 \right)}} + \frac{i \arg{\left(125 \cdot 2^{x} - 271 \right)}}{\log{\left(3 \right)}}$$
/| x|\ / x\
log\|-271 + 125*2 |/ I*arg\-271 + 125*2 /
-------------------- + --------------------
log(3) log(3)
$$\frac{\log{\left(\left|{125 \cdot 2^{x} - 271}\right| \right)}}{\log{\left(3 \right)}} + \frac{i \arg{\left(125 \cdot 2^{x} - 271 \right)}}{\log{\left(3 \right)}}$$
/ x\ /| x|\
I*arg\-271 + 125*2 / + log\|-271 + 125*2 |/
-------------------------------------------
log(3)
$$\frac{\log{\left(\left|{125 \cdot 2^{x} - 271}\right| \right)} + i \arg{\left(125 \cdot 2^{x} - 271 \right)}}{\log{\left(3 \right)}}$$
(i*arg(-271 + 125*2^x) + log(|-271 + 125*2^x|))/log(3)