El profesor se sorprenderá mucho al ver tu solución correcta😉
3 3 cos (x) + cos (y) = 3*cos(x)*cos(y)
/ // _________________ \ \\ / // _________________ \ \\ | || / ___ / ___\| || | || / ___ / ___\| || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || 3 / -- + ---------- *|- - - -------|| || | || 3 / -- + ---------- *|- - - -------|| || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| || x1 = - re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + 2*pi - I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| | || _________________ 3 | || | || _________________ 3 | || | || / ___\ / ___ | || | || / ___\ / ___ | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || |- - - -------|*3 / -- + ---------- | || | || |- - - -------|*3 / -- + ---------- | || \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / //
/ // _________________ \ \\ / // _________________ \ \\ | || / ___ / ___\| || | || / ___ / ___\| || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || 3 / -- + ---------- *|- - + -------|| || | || 3 / -- + ---------- *|- - + -------|| || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| || x2 = - re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + 2*pi - I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| | || _________________ 3 | || | || _________________ 3 | || | || / ___\ / ___ | || | || / ___\ / ___ | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || |- - + -------|*3 / -- + ---------- | || | || |- - + -------|*3 / -- + ---------- | || \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / //
/ // _________________\ \\ / // _________________\ \\ | || / ___ | || | || / ___ | || | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | || | || 3 / -- + ---------- | || | || 3 / -- + ---------- | || | || 3 \/ 2 2 | || | || 3 \/ 2 2 | || x3 = - re|acos||- ---------------------- - ----------------------|*cos(y)|| + 2*pi - I*im|acos||- ---------------------- - ----------------------|*cos(y)|| | || _________________ 3 | || | || _________________ 3 | || | || / ___ | || | || / ___ | || | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | || | || 3 / -- + ---------- | || | || 3 / -- + ---------- | || \ \\ \/ 2 2 / // \ \\ \/ 2 2 / //
/ // _________________ \ \\ / // _________________ \ \\ | || / ___ / ___\| || | || / ___ / ___\| || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || 3 / -- + ---------- *|- - - -------|| || | || 3 / -- + ---------- *|- - - -------|| || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| || x4 = I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| | || _________________ 3 | || | || _________________ 3 | || | || / ___\ / ___ | || | || / ___\ / ___ | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || |- - - -------|*3 / -- + ---------- | || | || |- - - -------|*3 / -- + ---------- | || \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / //
/ // _________________ \ \\ / // _________________ \ \\ | || / ___ / ___\| || | || / ___ / ___\| || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || 3 / -- + ---------- *|- - + -------|| || | || 3 / -- + ---------- *|- - + -------|| || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| || x5 = I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| | || _________________ 3 | || | || _________________ 3 | || | || / ___\ / ___ | || | || / ___\ / ___ | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || |- - + -------|*3 / -- + ---------- | || | || |- - + -------|*3 / -- + ---------- | || \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / //
/ // _________________\ \\ / // _________________\ \\ | || / ___ | || | || / ___ | || | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | || | || 3 / -- + ---------- | || | || 3 / -- + ---------- | || | || 3 \/ 2 2 | || | || 3 \/ 2 2 | || x6 = I*im|acos||- ---------------------- - ----------------------|*cos(y)|| + re|acos||- ---------------------- - ----------------------|*cos(y)|| | || _________________ 3 | || | || _________________ 3 | || | || / ___ | || | || / ___ | || | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | || | || 3 / -- + ---------- | || | || 3 / -- + ---------- | || \ \\ \/ 2 2 / // \ \\ \/ 2 2 / //
x6 = re(acos((-(27/2 + 27*sqrt(3)*i/2)^(1/3)/3 - 3/(27/2 + 27*sqrt(3)*i/2)^(1/3))*cos(y))) + i*im(acos((-(27/2 + 27*sqrt(3)*i/2)^(1/3)/3 - 3/(27/2 + 27*sqrt(3)*i/2)^(1/3))*cos(y)))
suma
/ // _________________ \ \\ / // _________________ \ \\ / // _________________ \ \\ / // _________________ \ \\ / // _________________\ \\ / // _________________\ \\ / // _________________ \ \\ / // _________________ \ \\ / // _________________ \ \\ / // _________________ \ \\ / // _________________\ \\ / // _________________\ \\ | || / ___ / ___\| || | || / ___ / ___\| || | || / ___ / ___\| || | || / ___ / ___\| || | || / ___ | || | || / ___ | || | || / ___ / ___\| || | || / ___ / ___\| || | || / ___ / ___\| || | || / ___ / ___\| || | || / ___ | || | || / ___ | || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | || | || 3 / -- + ---------- *|- - - -------|| || | || 3 / -- + ---------- *|- - - -------|| || | || 3 / -- + ---------- *|- - + -------|| || | || 3 / -- + ---------- *|- - + -------|| || | || 3 / -- + ---------- | || | || 3 / -- + ---------- | || | || 3 / -- + ---------- *|- - - -------|| || | || 3 / -- + ---------- *|- - - -------|| || | || 3 / -- + ---------- *|- - + -------|| || | || 3 / -- + ---------- *|- - + -------|| || | || 3 / -- + ---------- | || | || 3 / -- + ---------- | || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 | || | || 3 \/ 2 2 | || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 | || | || 3 \/ 2 2 | || - re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + 2*pi - I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + - re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + 2*pi - I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + - re|acos||- ---------------------- - ----------------------|*cos(y)|| + 2*pi - I*im|acos||- ---------------------- - ----------------------|*cos(y)|| + I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + I*im|acos||- ---------------------- - ----------------------|*cos(y)|| + re|acos||- ---------------------- - ----------------------|*cos(y)|| | || _________________ 3 | || | || _________________ 3 | || | || _________________ 3 | || | || _________________ 3 | || | || _________________ 3 | || | || _________________ 3 | || | || _________________ 3 | || | || _________________ 3 | || | || _________________ 3 | || | || _________________ 3 | || | || _________________ 3 | || | || _________________ 3 | || | || / ___\ / ___ | || | || / ___\ / ___ | || | || / ___\ / ___ | || | || / ___\ / ___ | || | || / ___ | || | || / ___ | || | || / ___\ / ___ | || | || / ___\ / ___ | || | || / ___\ / ___ | || | || / ___\ / ___ | || | || / ___ | || | || / ___ | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | || | || |- - - -------|*3 / -- + ---------- | || | || |- - - -------|*3 / -- + ---------- | || | || |- - + -------|*3 / -- + ---------- | || | || |- - + -------|*3 / -- + ---------- | || | || 3 / -- + ---------- | || | || 3 / -- + ---------- | || | || |- - - -------|*3 / -- + ---------- | || | || |- - - -------|*3 / -- + ---------- | || | || |- - + -------|*3 / -- + ---------- | || | || |- - + -------|*3 / -- + ---------- | || | || 3 / -- + ---------- | || | || 3 / -- + ---------- | || \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / // \ \\ \/ 2 2 / // \ \\ \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / // \ \\ \/ 2 2 / // \ \\ \/ 2 2 / //
=
6*pi
producto
/ / // _________________ \ \\ / // _________________ \ \\\ / / // _________________ \ \\ / // _________________ \ \\\ / / // _________________\ \\ / // _________________\ \\\ / / // _________________ \ \\ / // _________________ \ \\\ / / // _________________ \ \\ / // _________________ \ \\\ / / // _________________\ \\ / // _________________\ \\\ | | || / ___ / ___\| || | || / ___ / ___\| ||| | | || / ___ / ___\| || | || / ___ / ___\| ||| | | || / ___ | || | || / ___ | ||| | | || / ___ / ___\| || | || / ___ / ___\| ||| | | || / ___ / ___\| || | || / ___ / ___\| ||| | | || / ___ | || | || / ___ | ||| | | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || ||| | | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || ||| | | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | ||| | | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || ||| | | || / 27 27*I*\/ 3 | 1 I*\/ 3 || || | || / 27 27*I*\/ 3 | 1 I*\/ 3 || ||| | | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | ||| | | || 3 / -- + ---------- *|- - - -------|| || | || 3 / -- + ---------- *|- - - -------|| ||| | | || 3 / -- + ---------- *|- - + -------|| || | || 3 / -- + ---------- *|- - + -------|| ||| | | || 3 / -- + ---------- | || | || 3 / -- + ---------- | ||| | | || 3 / -- + ---------- *|- - - -------|| || | || 3 / -- + ---------- *|- - - -------|| ||| | | || 3 / -- + ---------- *|- - + -------|| || | || 3 / -- + ---------- *|- - + -------|| ||| | | || 3 / -- + ---------- | || | || 3 / -- + ---------- | ||| | | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| ||| | | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| ||| | | || 3 \/ 2 2 | || | || 3 \/ 2 2 | ||| | | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| ||| | | || 3 \/ 2 2 \ 2 2 /| || | || 3 \/ 2 2 \ 2 2 /| ||| | | || 3 \/ 2 2 | || | || 3 \/ 2 2 | ||| |- re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + 2*pi - I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|||*|- re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + 2*pi - I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|||*|- re|acos||- ---------------------- - ----------------------|*cos(y)|| + 2*pi - I*im|acos||- ---------------------- - ----------------------|*cos(y)|||*|I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|||*|I*im|acos||- -------------------------------------- - --------------------------------------|*cos(y)|| + re|acos||- -------------------------------------- - --------------------------------------|*cos(y)|||*|I*im|acos||- ---------------------- - ----------------------|*cos(y)|| + re|acos||- ---------------------- - ----------------------|*cos(y)||| | | || _________________ 3 | || | || _________________ 3 | ||| | | || _________________ 3 | || | || _________________ 3 | ||| | | || _________________ 3 | || | || _________________ 3 | ||| | | || _________________ 3 | || | || _________________ 3 | ||| | | || _________________ 3 | || | || _________________ 3 | ||| | | || _________________ 3 | || | || _________________ 3 | ||| | | || / ___\ / ___ | || | || / ___\ / ___ | ||| | | || / ___\ / ___ | || | || / ___\ / ___ | ||| | | || / ___ | || | || / ___ | ||| | | || / ___\ / ___ | || | || / ___\ / ___ | ||| | | || / ___\ / ___ | || | || / ___\ / ___ | ||| | | || / ___ | || | || / ___ | ||| | | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | ||| | | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | ||| | | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | ||| | | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | ||| | | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | || | || | 1 I*\/ 3 | / 27 27*I*\/ 3 | ||| | | || / 27 27*I*\/ 3 | || | || / 27 27*I*\/ 3 | ||| | | || |- - - -------|*3 / -- + ---------- | || | || |- - - -------|*3 / -- + ---------- | ||| | | || |- - + -------|*3 / -- + ---------- | || | || |- - + -------|*3 / -- + ---------- | ||| | | || 3 / -- + ---------- | || | || 3 / -- + ---------- | ||| | | || |- - - -------|*3 / -- + ---------- | || | || |- - - -------|*3 / -- + ---------- | ||| | | || |- - + -------|*3 / -- + ---------- | || | || |- - + -------|*3 / -- + ---------- | ||| | | || 3 / -- + ---------- | || | || 3 / -- + ---------- | ||| \ \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / /// \ \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / /// \ \ \\ \/ 2 2 / // \ \\ \/ 2 2 / /// \ \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / /// \ \ \\ \ 2 2 / \/ 2 2 / // \ \\ \ 2 2 / \/ 2 2 / /// \ \ \\ \/ 2 2 / // \ \\ \/ 2 2 / ///
=
/ / / /pi\\\ / / /pi\\\\ / / / /2*pi\\\ / / /2*pi\\\\ / / / /pi\\\ / / /pi\\\\ / / / /pi\\\ / / /pi\\\\ / / / /2*pi\\\ / / /2*pi\\\\ / / / /pi\\\ / / /pi\\\\ -|I*im|acos|-2*cos(y)*cos|--||| + re|acos|-2*cos(y)*cos|--||||*|I*im|acos|2*cos(y)*cos|----||| + re|acos|2*cos(y)*cos|----||||*|I*im|acos|2*cos(y)*sin|--||| + re|acos|2*cos(y)*sin|--||||*|-2*pi + I*im|acos|-2*cos(y)*cos|--||| + re|acos|-2*cos(y)*cos|--||||*|-2*pi + I*im|acos|2*cos(y)*cos|----||| + re|acos|2*cos(y)*cos|----||||*|-2*pi + I*im|acos|2*cos(y)*sin|--||| + re|acos|2*cos(y)*sin|--|||| \ \ \ \9 /// \ \ \9 //// \ \ \ \ 9 /// \ \ \ 9 //// \ \ \ \18/// \ \ \18//// \ \ \ \9 /// \ \ \9 //// \ \ \ \ 9 /// \ \ \ 9 //// \ \ \ \18/// \ \ \18////
-(i*im(acos(-2*cos(y)*cos(pi/9))) + re(acos(-2*cos(y)*cos(pi/9))))*(i*im(acos(2*cos(y)*cos(2*pi/9))) + re(acos(2*cos(y)*cos(2*pi/9))))*(i*im(acos(2*cos(y)*sin(pi/18))) + re(acos(2*cos(y)*sin(pi/18))))*(-2*pi + i*im(acos(-2*cos(y)*cos(pi/9))) + re(acos(-2*cos(y)*cos(pi/9))))*(-2*pi + i*im(acos(2*cos(y)*cos(2*pi/9))) + re(acos(2*cos(y)*cos(2*pi/9))))*(-2*pi + i*im(acos(2*cos(y)*sin(pi/18))) + re(acos(2*cos(y)*sin(pi/18))))