Cos(5x)/5

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Solution for Cos(5x)/5 equation: 


x in (-oo:+oo)

cos(5*x)/5 = 0

cos(5*x)/5 = 0 // * 5

cos(5*x) = 0

cos(5*x) = 0  <=>  5*x = pi*k_1+pi/2 i k_1 należy do I

t_1 = pi*k_1+pi/2

5*x-t_1 = 0

5*x-t_1 = 0 // + t_1

5*x = t_1 // : 5

x = t_1/5

x = pi*k_1+pi/2/5 i k_1 należy do I

x = pi*k_1+pi/2/5

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