cos(pi/2(2x+5))=1+(y-1)^8 la ecuación
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Solución
Solución detallada
Tenemos la ecuación
cos(2π(2x+5))=(y−1)8+1es la ecuación trigonométrica más simple
Dividamos ambos miembros de la ecuación en -1
La ecuación se convierte en
sin(πx)=−y8+8y7−28y6+56y5−70y4+56y3−28y2+8y−2Esta ecuación se reorganiza en
πx=2πn+asin(−y8+8y7−28y6+56y5−70y4+56y3−28y2+8y−2)πx=2πn−asin(−y8+8y7−28y6+56y5−70y4+56y3−28y2+8y−2)+πO
πx=2πn−asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2)πx=2πn+asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2)+π, donde n es cualquier número entero
Dividamos ambos miembros de la ecuación obtenida en
πobtenemos la respuesta:
x1=π2πn−asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2)x2=π2πn+asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2)+π
/ / 8 3 5 7 2 6 4\\ / / 8 3 5 7 2 6 4\\
pi + re\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y // I*im\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y //
x1 = -------------------------------------------------------------------------- + -----------------------------------------------------------------------
pi pi
x1=πre(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))+π+πiim(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))
/ / 8 3 5 7 2 6 4\\ / / 8 3 5 7 2 6 4\\
re\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y // I*im\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y //
x2 = - --------------------------------------------------------------------- - -----------------------------------------------------------------------
pi pi
x2=−πre(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))−πiim(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))
x2 = -re(asin(y^8 - 8*y^7 + 28*y^6 - 56*y^5 + 70*y^4 - 56*y^3 + 28*y^2 - 8*y + 2))/pi - i*im(asin(y^8 - 8*y^7 + 28*y^6 - 56*y^5 + 70*y^4 - 56*y^3 + 28*y^2 - 8*y + 2))/pi
Suma y producto de raíces
[src]
/ / 8 3 5 7 2 6 4\\ / / 8 3 5 7 2 6 4\\ / / 8 3 5 7 2 6 4\\ / / 8 3 5 7 2 6 4\\
pi + re\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y // I*im\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y // re\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y // I*im\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y //
-------------------------------------------------------------------------- + ----------------------------------------------------------------------- + - --------------------------------------------------------------------- - -----------------------------------------------------------------------
pi pi pi pi
(πre(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))+π+πiim(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2)))+(−πre(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))−πiim(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2)))
/ / 8 3 5 7 2 6 4\\ / / 8 3 5 7 2 6 4\\
pi + re\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y // re\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y //
-------------------------------------------------------------------------- - ---------------------------------------------------------------------
pi pi
πre(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))+π−πre(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))
/ / / 8 3 5 7 2 6 4\\ / / 8 3 5 7 2 6 4\\\ / / / 8 3 5 7 2 6 4\\ / / 8 3 5 7 2 6 4\\\
|pi + re\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y // I*im\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y //| | re\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y // I*im\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y //|
|-------------------------------------------------------------------------- + -----------------------------------------------------------------------|*|- --------------------------------------------------------------------- - -----------------------------------------------------------------------|
\ pi pi / \ pi pi /
(πre(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))+π+πiim(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2)))(−πre(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))−πiim(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2)))
/ / / 8 3 5 7 2 6 4\\ / / 8 3 5 7 2 6 4\\\ / / / 8 3 5 7 2 6 4\\ / / 8 3 5 7 2 6 4\\\
-\I*im\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y // + re\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y ///*\pi + I*im\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y // + re\asin\2 + y - 56*y - 56*y - 8*y - 8*y + 28*y + 28*y + 70*y ///
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2
pi
−π2(re(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))+iim(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2)))(re(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))+iim(asin(y8−8y7+28y6−56y5+70y4−56y3+28y2−8y+2))+π)
-(i*im(asin(2 + y^8 - 56*y^3 - 56*y^5 - 8*y - 8*y^7 + 28*y^2 + 28*y^6 + 70*y^4)) + re(asin(2 + y^8 - 56*y^3 - 56*y^5 - 8*y - 8*y^7 + 28*y^2 + 28*y^6 + 70*y^4)))*(pi + i*im(asin(2 + y^8 - 56*y^3 - 56*y^5 - 8*y - 8*y^7 + 28*y^2 + 28*y^6 + 70*y^4)) + re(asin(2 + y^8 - 56*y^3 - 56*y^5 - 8*y - 8*y^7 + 28*y^2 + 28*y^6 + 70*y^4)))/pi^2