Question

"найдите ООФ : y=√16-x^2/x-2 ; y=√x^2-25/x+7 ; y=0,5cosx ; y=3sinx ; y=tg(x+π/3) ; y=tg(x-π/4) ; y=(cos-sinx)^2 ; y=(cos+sinx)^2

Answer 1

1. x = (-∞,2)∪(2, +∞)
2. x = (-∞,-5)∪(5, 7)∪(5, +∞)
3. x=R
4. x=R
7. x=R
8.x=R