4sin(2/9x)

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Solution for 4sin(2/9x) equation: 


x in (-oo:+oo)

4*sin((2/9)*x) = 0

sin((2/9)*x) = 0

sin((2/9)*x) = 0  <=>  (2/9)*x = pi*k_1 i k_1 należy do I

t_1 = pi*k_1

(2/9)*x-t_1 = 0

2/9*x-t_1 = 0 // + t_1

2/9*x = t_1 // : 2/9

x = t_1/2/9

x = 9/2*t_1

x = 9/2*pi*k_1 i k_1 należy do I

4*sin((2/9)*x) = 0  <=>  4 = 0 or 4*sin((2/9)*x) = 0  <=>  sin((2/9)*x) = 0

x = 9/2*pi*k_1

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