wmutex

1. x = +/- 2*arctg(√(5 +/- 2√6)) + 2*k*pi

wmutex

2. x = log2((2*k+1)*pi) - 3

kint

Ce prostii se mai scriu... la 1 trebuie uniti logaritmii pt a scapa de ei. Notatie cos2(x) = cos(x)^2
Adica lg(2sin(x)cos(x) / sin(x))=lg(cos(2x)*4/cos(x))
adica 2cos(x) = ( cos2(x)-sin2(x) ) * 4 / cos(x)
adica cos2(x)= 2(cos2(x)-sin2(x))
adica cos2(x)-2sin2(x) = 0
adica 3sin2(x) = 1
x = arcsin (1/3^0.5)