Question

$cos^{2} frac{3}{2}x = frac{1}{4}$

Answer 1

$cos^{2} frac{3}{2}x = frac{1}{4} \ 2 cos(3 x) + 1 = 0 \ cos(3x) = - frac{1}{2} \ 3x = frac{pi }{3} n + 2 pi n \ x = frac{pi }{9} n + frac{2pi}{3} n$

Answer 2

я тебя люблю