cos((pi*x))/4

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Solution for cos((pi*x))/4 equation: 


x in (-oo:+oo)

cos(pi*x)/4 = 0

cos(pi*x)/4 = 0 // * 4

cos(pi*x) = 0

cos(pi*x) = 0  <=>  pi*x = pi*k_1+pi/2 i k_1 należy do I

t_1 = pi*k_1+pi/2

pi*x-t_1 = 0

pi*x-t_1 = 0 // + t_1

pi*x = t_1 // : pi

x = t_1/pi

x = pi*k_1+pi/2/pi i k_1 należy do I

x = pi*k_1+pi/2/pi

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