Sr Examen

Otras calculadoras

15*x+3*a*x-2*a=23 la ecuación

El profesor se sorprenderá mucho al ver tu solución correcta😉

v

Solución numérica:

Buscar la solución numérica en el intervalo [, ]

Solución

Ha introducido [src]
15*x + 3*a*x - 2*a = 23
$$- 2 a + \left(3 a x + 15 x\right) = 23$$
Solución detallada
Tenemos una ecuación lineal:
15*x+3*a*x-2*a = 23

Sumamos los términos semejantes en el miembro izquierdo de la ecuación:
-2*a + 15*x + 3*a*x = 23

Move the summands with the other variables
del miembro izquierdo al derecho, obtenemos:
$$3 a x + 15 x = 2 a + 23$$
Dividamos ambos miembros de la ecuación en (15*x + 3*a*x)/x
x = 23 + 2*a / ((15*x + 3*a*x)/x)

Obtenemos la respuesta: x = (23 + 2*a)/(3*(5 + a))
Resolución de la ecuación paramétrica
Se da la ecuación con parámetro:
$$3 a x - 2 a + 15 x = 23$$
Коэффициент при x равен
$$3 a + 15$$
entonces son posibles los casos para a :
$$a < -5$$
$$a = -5$$
Consideremos todos los casos con detalles:
Con
$$a < -5$$
la ecuación será
$$- 3 x - 11 = 0$$
su solución
$$x = - \frac{11}{3}$$
Con
$$a = -5$$
la ecuación será
$$-13 = 0$$
su solución
no hay soluciones
Gráfica
Respuesta rápida [src]
                                                                                2                                        
       /     (23 + 2*re(a))*im(a)        2*(5 + re(a))*im(a)   \            2*im (a)           (5 + re(a))*(23 + 2*re(a))
x1 = I*|- ------------------------- + -------------------------| + ------------------------- + --------------------------
       |    /           2     2   \     /           2     2   \|     /           2     2   \     /           2     2   \ 
       \  3*\(5 + re(a))  + im (a)/   3*\(5 + re(a))  + im (a)//   3*\(5 + re(a))  + im (a)/   3*\(5 + re(a))  + im (a)/ 
$$x_{1} = i \left(\frac{2 \left(\operatorname{re}{\left(a\right)} + 5\right) \operatorname{im}{\left(a\right)}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)} - \frac{\left(2 \operatorname{re}{\left(a\right)} + 23\right) \operatorname{im}{\left(a\right)}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)}\right) + \frac{\left(\operatorname{re}{\left(a\right)} + 5\right) \left(2 \operatorname{re}{\left(a\right)} + 23\right)}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)} + \frac{2 \left(\operatorname{im}{\left(a\right)}\right)^{2}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)}$$
x1 = i*(2*(re(a) + 5)*im(a)/(3*((re(a) + 5)^2 + im(a)^2)) - (2*re(a) + 23)*im(a)/(3*((re(a) + 5)^2 + im(a)^2))) + (re(a) + 5)*(2*re(a) + 23)/(3*((re(a) + 5)^2 + im(a)^2)) + 2*im(a)^2/(3*((re(a) + 5)^2 + im(a)^2))
Suma y producto de raíces [src]
suma
                                                                           2                                        
  /     (23 + 2*re(a))*im(a)        2*(5 + re(a))*im(a)   \            2*im (a)           (5 + re(a))*(23 + 2*re(a))
I*|- ------------------------- + -------------------------| + ------------------------- + --------------------------
  |    /           2     2   \     /           2     2   \|     /           2     2   \     /           2     2   \ 
  \  3*\(5 + re(a))  + im (a)/   3*\(5 + re(a))  + im (a)//   3*\(5 + re(a))  + im (a)/   3*\(5 + re(a))  + im (a)/ 
$$i \left(\frac{2 \left(\operatorname{re}{\left(a\right)} + 5\right) \operatorname{im}{\left(a\right)}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)} - \frac{\left(2 \operatorname{re}{\left(a\right)} + 23\right) \operatorname{im}{\left(a\right)}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)}\right) + \frac{\left(\operatorname{re}{\left(a\right)} + 5\right) \left(2 \operatorname{re}{\left(a\right)} + 23\right)}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)} + \frac{2 \left(\operatorname{im}{\left(a\right)}\right)^{2}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)}$$
=
                                                                           2                                        
  /     (23 + 2*re(a))*im(a)        2*(5 + re(a))*im(a)   \            2*im (a)           (5 + re(a))*(23 + 2*re(a))
I*|- ------------------------- + -------------------------| + ------------------------- + --------------------------
  |    /           2     2   \     /           2     2   \|     /           2     2   \     /           2     2   \ 
  \  3*\(5 + re(a))  + im (a)/   3*\(5 + re(a))  + im (a)//   3*\(5 + re(a))  + im (a)/   3*\(5 + re(a))  + im (a)/ 
$$i \left(\frac{2 \left(\operatorname{re}{\left(a\right)} + 5\right) \operatorname{im}{\left(a\right)}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)} - \frac{\left(2 \operatorname{re}{\left(a\right)} + 23\right) \operatorname{im}{\left(a\right)}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)}\right) + \frac{\left(\operatorname{re}{\left(a\right)} + 5\right) \left(2 \operatorname{re}{\left(a\right)} + 23\right)}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)} + \frac{2 \left(\operatorname{im}{\left(a\right)}\right)^{2}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)}$$
producto
                                                                           2                                        
  /     (23 + 2*re(a))*im(a)        2*(5 + re(a))*im(a)   \            2*im (a)           (5 + re(a))*(23 + 2*re(a))
I*|- ------------------------- + -------------------------| + ------------------------- + --------------------------
  |    /           2     2   \     /           2     2   \|     /           2     2   \     /           2     2   \ 
  \  3*\(5 + re(a))  + im (a)/   3*\(5 + re(a))  + im (a)//   3*\(5 + re(a))  + im (a)/   3*\(5 + re(a))  + im (a)/ 
$$i \left(\frac{2 \left(\operatorname{re}{\left(a\right)} + 5\right) \operatorname{im}{\left(a\right)}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)} - \frac{\left(2 \operatorname{re}{\left(a\right)} + 23\right) \operatorname{im}{\left(a\right)}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)}\right) + \frac{\left(\operatorname{re}{\left(a\right)} + 5\right) \left(2 \operatorname{re}{\left(a\right)} + 23\right)}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)} + \frac{2 \left(\operatorname{im}{\left(a\right)}\right)^{2}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)}$$
=
    2                                             
2*im (a) + (5 + re(a))*(23 + 2*re(a)) - 13*I*im(a)
--------------------------------------------------
              /           2     2   \             
            3*\(5 + re(a))  + im (a)/             
$$\frac{\left(\operatorname{re}{\left(a\right)} + 5\right) \left(2 \operatorname{re}{\left(a\right)} + 23\right) + 2 \left(\operatorname{im}{\left(a\right)}\right)^{2} - 13 i \operatorname{im}{\left(a\right)}}{3 \left(\left(\operatorname{re}{\left(a\right)} + 5\right)^{2} + \left(\operatorname{im}{\left(a\right)}\right)^{2}\right)}$$
(2*im(a)^2 + (5 + re(a))*(23 + 2*re(a)) - 13*i*im(a))/(3*((5 + re(a))^2 + im(a)^2))