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D( x )
cos(x^2) = 0
cos(x^2) = 0
cos(x^2) = 0
cos(x^2) = 0 <=> x^2 = pi*k_1+pi/2 i k_1 naleu017Cy do I
t_1 = pi*k_1+pi/2
x^2-t_1 = 0
1*x^2 = t_1 // : 1
x^2 = t_1
x^2 = t_1 // ^ 1/2
abs(x) = t_1^(1/2)
x = t_1^(1/2) or x = -t_1^(1/2)
x = pi*k_1+pi/2^(1/2) i k_1 naleu017Cy do I
x = -pi*k_1+pi/2^(1/2) i k_1 naleu017Cy do I
x in {( -oo : +oo ) / {< pi*k_1+pi/2^(1/2) : pi*k_1+pi/2^(1/2) > U < -pi*k_1+pi/2^(1/2) : -pi*k_1+pi/2^(1/2) >}} i k_1 -> {I}
sin(x^2)/cos(x^2) = 0
sin(x^2)/cos(x^2) = 0 // * cos(x^2)
sin(x^2) = 0
sin(x^2) = 0 <=> x^2 = pi*k_1 i k_1 naleu017Cy do I
t_1 = pi*k_1
x^2-t_1 = 0
1*x^2 = t_1 // : 1
x^2 = t_1
x^2 = t_1 // ^ 1/2
abs(x) = t_1^(1/2)
x = t_1^(1/2) or x = -t_1^(1/2)
x = pi*k_1^(1/2) i k_1 naleu017Cy do I
x = -pi*k_1^(1/2) i k_1 naleu017Cy do I
x in { pi*k_1^(1/2), -pi*k_1^(1/2) }
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