-sin(pi/4*x)*pi/4

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Solution for -sin(pi/4*x)*pi/4 equation: 


x in (-oo:+oo)

(pi*(-sin((pi/4)*x)))/4 = 0

(pi*(-sin((pi/4)*x)))/4 = 0 // * 4

pi*(-sin((pi/4)*x)) = 0

-sin((pi/4)*x) = 0

-sin((pi/4)*x) = 0  <=>  (pi/4)*x = pi*k_1 i k_1 należy do I

t_1 = pi*k_1

(pi/4)*x-t_1 = 0

(pi/4)*x-t_1 = 0 // + t_1

(pi/4)*x = t_1 // : pi/4

x = t_1/(pi/4)

x = pi*k_1/(pi/4) i k_1 należy do I

pi*(-sin((pi/4)*x)) = 0  <=>  pi = 0 or pi*(-sin((pi/4)*x)) = 0  <=>  -sin((pi/4)*x) = 0

x = pi*k_1/(pi/4)

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