cos(pi*t/2)

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Solution for cos(pi*t/2) equation: 


t in (-oo:+oo)

cos((pi*t)/2) = 0

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

t_1 = pi*k_1+pi/2

(pi*t)/2-t_1 = 0

(pi/2)*t-t_1 = 0 // + t_1

(pi/2)*t = t_1 // : pi/2

t = t_1/(pi/2)

t = pi*k_1+pi/2/(pi/2) i k_1 należy do I

t = pi*k_1+pi/2/(pi/2)

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