El profesor se sorprenderá mucho al ver tu solución correcta😉
a*x^2 + b*x + c = 0
D = b^2 - 4 * a * c =
(2)^2 - 4 * (-2) * (-1 + a) = -4 + 8*a
x1 = (-b + sqrt(D)) / (2*a)
x2 = (-b - sqrt(D)) / (2*a)
suma
____________________________ ____________________________ ____________________________ ____________________________ 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\ 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\ 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\ 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\ \/ (-1 + 2*re(a)) + 4*im (a) *cos|----------------------------| I*\/ (-1 + 2*re(a)) + 4*im (a) *sin|----------------------------| \/ (-1 + 2*re(a)) + 4*im (a) *cos|----------------------------| I*\/ (-1 + 2*re(a)) + 4*im (a) *sin|----------------------------| 1 \ 2 / \ 2 / 1 \ 2 / \ 2 / - - ----------------------------------------------------------------- - ------------------------------------------------------------------- + - + ----------------------------------------------------------------- + ------------------------------------------------------------------- 2 2 2 2 2 2
=
1
producto
/ ____________________________ ____________________________ \ / ____________________________ ____________________________ \ | 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\ 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\| | 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\ 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\| | \/ (-1 + 2*re(a)) + 4*im (a) *cos|----------------------------| I*\/ (-1 + 2*re(a)) + 4*im (a) *sin|----------------------------|| | \/ (-1 + 2*re(a)) + 4*im (a) *cos|----------------------------| I*\/ (-1 + 2*re(a)) + 4*im (a) *sin|----------------------------|| |1 \ 2 / \ 2 /| |1 \ 2 / \ 2 /| |- - ----------------------------------------------------------------- - -------------------------------------------------------------------|*|- + ----------------------------------------------------------------- + -------------------------------------------------------------------| \2 2 2 / \2 2 2 /
=
1 re(a) I*im(a) - - ----- - ------- 2 2 2
1/2 - re(a)/2 - i*im(a)/2
____________________________ ____________________________ 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\ 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\ \/ (-1 + 2*re(a)) + 4*im (a) *cos|----------------------------| I*\/ (-1 + 2*re(a)) + 4*im (a) *sin|----------------------------| 1 \ 2 / \ 2 / x1 = - - ----------------------------------------------------------------- - ------------------------------------------------------------------- 2 2 2
____________________________ ____________________________ 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\ 4 / 2 2 /atan2(2*im(a), -1 + 2*re(a))\ \/ (-1 + 2*re(a)) + 4*im (a) *cos|----------------------------| I*\/ (-1 + 2*re(a)) + 4*im (a) *sin|----------------------------| 1 \ 2 / \ 2 / x2 = - + ----------------------------------------------------------------- + ------------------------------------------------------------------- 2 2 2
x2 = i*((2*re(a) - 1)^2 + 4*im(a)^2)^(1/4)*sin(atan2(2*im(a, 2*re(a) - 1)/2)/2 + ((2*re(a) - 1)^2 + 4*im(a)^2)^(1/4)*cos(atan2(2*im(a), 2*re(a) - 1)/2)/2 + 1/2)