Question

Знайти E(y)
y=sin²x-4

Answer 1

y = sin²(x) - 4

-1 ≤ sin(x) ≤ 1

0 ≤ sin²(x) ≤ 1

0 - 4 ≤ sin²(x) - 4 ≤ 1 - 4

-4 ≤ sin²(x) - 4 ≤ -3

E(y) = [-4, -3]