cos(x/4)=0

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Solution for cos(x/4)=0 equation: 


x in (-oo:+oo)

cos(x/4) = 0

cos(x/4) = 0  <=>  x/4 = pi*k_1+pi/2 i k_1 należy do I

t_1 = pi*k_1+pi/2

x/4-t_1 = 0

1/4*x-t_1 = 0 // + t_1

1/4*x = t_1 // : 1/4

x = t_1/1/4

x = 4*t_1

x = 4*pi*k_1+pi/2 i k_1 należy do I

x = 4*pi*k_1+pi/2

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