(((x-1)^3)/3)-4*x=0 la ecuación
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Solución
Gráfica
/ / ___\\ / / / ___\\ / / ___\\\ / / ___\\
| |\/ 7 || | | |\/ 7 || | |\/ 7 ||| | |\/ 7 ||
|atan|-----|| | |atan|-----|| |atan|-----||| |atan|-----||
| \ 3 /| / 1 \ | | \ 3 /| / 1 \ ___ | \ 3 /|| ___ | \ 3 /|
x1 = 1 - cos|-----------| + 4*re|----------------------------------| + I*|- sin|-----------| + 4*im|----------------------------------| - \/ 3 *cos|-----------|| + \/ 3 *sin|-----------|
\ 3 / | _______________ / ___\| | \ 3 / | _______________ / ___\| \ 3 /| \ 3 /
|3 / ___ | 1 I*\/ 3 || | |3 / ___ | 1 I*\/ 3 || |
|\/ 6 + 2*I*\/ 7 *|- - - -------|| | |\/ 6 + 2*I*\/ 7 *|- - - -------|| |
\ \ 2 2 // \ \ \ 2 2 // /
x1=−cos3atan(37)+4re(−21−23i)36+27i1+3sin3atan(37)+1+i−3cos3atan(37)−sin3atan(37)+4im(−21−23i)36+27i1
/ / ___\\ / / / ___\\ / / ___\\\ / / ___\\
| |\/ 7 || | | |\/ 7 || | |\/ 7 ||| | |\/ 7 ||
|atan|-----|| | |atan|-----|| |atan|-----||| |atan|-----||
| \ 3 /| / 1 \ | | \ 3 /| / 1 \ ___ | \ 3 /|| ___ | \ 3 /|
x2 = 1 - cos|-----------| + 4*re|----------------------------------| + I*|- sin|-----------| + 4*im|----------------------------------| + \/ 3 *cos|-----------|| - \/ 3 *sin|-----------|
\ 3 / | _______________ / ___\| | \ 3 / | _______________ / ___\| \ 3 /| \ 3 /
|3 / ___ | 1 I*\/ 3 || | |3 / ___ | 1 I*\/ 3 || |
|\/ 6 + 2*I*\/ 7 *|- - + -------|| | |\/ 6 + 2*I*\/ 7 *|- - + -------|| |
\ \ 2 2 // \ \ \ 2 2 // /
x2=4re(−21+23i)36+27i1−cos3atan(37)−3sin3atan(37)+1+i4im(−21+23i)36+27i1−sin3atan(37)+3cos3atan(37)
_______________
3 / ___ 4
x3 = 1 + \/ 6 + 2*I*\/ 7 + ------------------
_______________
3 / ___
\/ 6 + 2*I*\/ 7
x3=1+36+27i4+36+27i
x3 = 1 + 4/(6 + 2*sqrt(7)*i)^(1/3) + (6 + 2*sqrt(7)*i)^(1/3)
Suma y producto de raíces
[src]
/ / ___\\ / / / ___\\ / / ___\\\ / / ___\\ / / ___\\ / / / ___\\ / / ___\\\ / / ___\\
| |\/ 7 || | | |\/ 7 || | |\/ 7 ||| | |\/ 7 || | |\/ 7 || | | |\/ 7 || | |\/ 7 ||| | |\/ 7 ||
|atan|-----|| | |atan|-----|| |atan|-----||| |atan|-----|| |atan|-----|| | |atan|-----|| |atan|-----||| |atan|-----|| _______________
| \ 3 /| / 1 \ | | \ 3 /| / 1 \ ___ | \ 3 /|| ___ | \ 3 /| | \ 3 /| / 1 \ | | \ 3 /| / 1 \ ___ | \ 3 /|| ___ | \ 3 /| 3 / ___ 4
1 - cos|-----------| + 4*re|----------------------------------| + I*|- sin|-----------| + 4*im|----------------------------------| - \/ 3 *cos|-----------|| + \/ 3 *sin|-----------| + 1 - cos|-----------| + 4*re|----------------------------------| + I*|- sin|-----------| + 4*im|----------------------------------| + \/ 3 *cos|-----------|| - \/ 3 *sin|-----------| + 1 + \/ 6 + 2*I*\/ 7 + ------------------
\ 3 / | _______________ / ___\| | \ 3 / | _______________ / ___\| \ 3 /| \ 3 / \ 3 / | _______________ / ___\| | \ 3 / | _______________ / ___\| \ 3 /| \ 3 / _______________
|3 / ___ | 1 I*\/ 3 || | |3 / ___ | 1 I*\/ 3 || | |3 / ___ | 1 I*\/ 3 || | |3 / ___ | 1 I*\/ 3 || | 3 / ___
|\/ 6 + 2*I*\/ 7 *|- - - -------|| | |\/ 6 + 2*I*\/ 7 *|- - - -------|| | |\/ 6 + 2*I*\/ 7 *|- - + -------|| | |\/ 6 + 2*I*\/ 7 *|- - + -------|| | \/ 6 + 2*I*\/ 7
\ \ 2 2 // \ \ \ 2 2 // / \ \ 2 2 // \ \ \ 2 2 // /
(1+36+27i4+36+27i)+−cos3atan(37)+4re(−21−23i)36+27i1+3sin3atan(37)+1+i−3cos3atan(37)−sin3atan(37)+4im(−21−23i)36+27i1+4re(−21+23i)36+27i1−cos3atan(37)−3sin3atan(37)+1+i4im(−21+23i)36+27i1−sin3atan(37)+3cos3atan(37)
/ / ___\\ / / / ___\\ / / ___\\\ / / / ___\\ / / ___\\\
| |\/ 7 || | | |\/ 7 || | |\/ 7 ||| | | |\/ 7 || | |\/ 7 |||
_______________ |atan|-----|| | |atan|-----|| |atan|-----||| | |atan|-----|| |atan|-----|||
3 / ___ | \ 3 /| 4 / 1 \ / 1 \ | | \ 3 /| / 1 \ ___ | \ 3 /|| | | \ 3 /| / 1 \ ___ | \ 3 /||
3 + \/ 6 + 2*I*\/ 7 - 2*cos|-----------| + ------------------ + 4*re|----------------------------------| + 4*re|----------------------------------| + I*|- sin|-----------| + 4*im|----------------------------------| + \/ 3 *cos|-----------|| + I*|- sin|-----------| + 4*im|----------------------------------| - \/ 3 *cos|-----------||
\ 3 / _______________ | _______________ / ___\| | _______________ / ___\| | \ 3 / | _______________ / ___\| \ 3 /| | \ 3 / | _______________ / ___\| \ 3 /|
3 / ___ |3 / ___ | 1 I*\/ 3 || |3 / ___ | 1 I*\/ 3 || | |3 / ___ | 1 I*\/ 3 || | | |3 / ___ | 1 I*\/ 3 || |
\/ 6 + 2*I*\/ 7 |\/ 6 + 2*I*\/ 7 *|- - + -------|| |\/ 6 + 2*I*\/ 7 *|- - - -------|| | |\/ 6 + 2*I*\/ 7 *|- - + -------|| | | |\/ 6 + 2*I*\/ 7 *|- - - -------|| |
\ \ 2 2 // \ \ 2 2 // \ \ \ 2 2 // / \ \ \ 2 2 // /
−2cos3atan(37)+4re(−21+23i)36+27i1+4re(−21−23i)36+27i1+3+36+27i4+i−3cos3atan(37)−sin3atan(37)+4im(−21−23i)36+27i1+i4im(−21+23i)36+27i1−sin3atan(37)+3cos3atan(37)+36+27i
/ / / ___\\ / / / ___\\ / / ___\\\ / / ___\\\ / / / ___\\ / / / ___\\ / / ___\\\ / / ___\\\
| | |\/ 7 || | | |\/ 7 || | |\/ 7 ||| | |\/ 7 ||| | | |\/ 7 || | | |\/ 7 || | |\/ 7 ||| | |\/ 7 |||
| |atan|-----|| | |atan|-----|| |atan|-----||| |atan|-----||| | |atan|-----|| | |atan|-----|| |atan|-----||| |atan|-----||| / _______________ \
| | \ 3 /| / 1 \ | | \ 3 /| / 1 \ ___ | \ 3 /|| ___ | \ 3 /|| | | \ 3 /| / 1 \ | | \ 3 /| / 1 \ ___ | \ 3 /|| ___ | \ 3 /|| | 3 / ___ 4 |
|1 - cos|-----------| + 4*re|----------------------------------| + I*|- sin|-----------| + 4*im|----------------------------------| - \/ 3 *cos|-----------|| + \/ 3 *sin|-----------||*|1 - cos|-----------| + 4*re|----------------------------------| + I*|- sin|-----------| + 4*im|----------------------------------| + \/ 3 *cos|-----------|| - \/ 3 *sin|-----------||*|1 + \/ 6 + 2*I*\/ 7 + ------------------|
| \ 3 / | _______________ / ___\| | \ 3 / | _______________ / ___\| \ 3 /| \ 3 /| | \ 3 / | _______________ / ___\| | \ 3 / | _______________ / ___\| \ 3 /| \ 3 /| | _______________|
| |3 / ___ | 1 I*\/ 3 || | |3 / ___ | 1 I*\/ 3 || | | | |3 / ___ | 1 I*\/ 3 || | |3 / ___ | 1 I*\/ 3 || | | | 3 / ___ |
| |\/ 6 + 2*I*\/ 7 *|- - - -------|| | |\/ 6 + 2*I*\/ 7 *|- - - -------|| | | | |\/ 6 + 2*I*\/ 7 *|- - + -------|| | |\/ 6 + 2*I*\/ 7 *|- - + -------|| | | \ \/ 6 + 2*I*\/ 7 /
\ \ \ 2 2 // \ \ \ 2 2 // / / \ \ \ 2 2 // \ \ \ 2 2 // / /
−cos3atan(37)+4re(−21−23i)36+27i1+3sin3atan(37)+1+i−3cos3atan(37)−sin3atan(37)+4im(−21−23i)36+27i14re(−21+23i)36+27i1−cos3atan(37)−3sin3atan(37)+1+i4im(−21+23i)36+27i1−sin3atan(37)+3cos3atan(37)(1+36+27i4+36+27i)
/ / / ___\\ / / ___\\\
| | |\/ 7 || | |\/ 7 |||
/ _______________ / _______________\\ | |atan|-----|| |2*atan|-----|||
2/3 | 3 / ___ | 3 / ___ || | | \ 3 /| | \ 3 /||
2 *\4 + \/ 6 + 2*I*\/ 7 *\1 + \/ 6 + 2*I*\/ 7 //*|-3 - 4*cos|-----------| + 8*cos|-------------||
\ \ 3 / \ 3 //
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_____________
3 / ___
2*\/ 3 + I*\/ 7
233+7i232(4+(1+36+27i)36+27i)(−4cos(3atan(37))−3+8cos(32atan(37)))
2^(2/3)*(4 + (6 + 2*i*sqrt(7))^(1/3)*(1 + (6 + 2*i*sqrt(7))^(1/3)))*(-3 - 4*cos(atan(sqrt(7)/3)/3) + 8*cos(2*atan(sqrt(7)/3)/3))/(2*(3 + i*sqrt(7))^(1/3))