2cos(pi*x/6)

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Solution for 2cos(pi*x/6) equation: 


x in (-oo:+oo)

2*cos((pi*x)/6) = 0

cos((pi*x)/6) = 0

cos((pi*x)/6) = 0  <=>  (pi*x)/6 = pi*k_1+pi/2 i k_1 należy do I

t_1 = pi*k_1+pi/2

(pi*x)/6-t_1 = 0

(pi/6)*x-t_1 = 0 // + t_1

(pi/6)*x = t_1 // : pi/6

x = t_1/(pi/6)

x = pi*k_1+pi/2/(pi/6) i k_1 należy do I

2*cos((pi*x)/6) = 0  <=>  2 = 0 or 2*cos((pi*x)/6) = 0  <=>  cos((pi*x)/6) = 0

x = pi*k_1+pi/2/(pi/6)

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