Question

A=sinx^2 +cosx^4 then range of A is ​

Answer 1

=sinx^2+cosx^2 (1-sinx^2)

=sinx^2 + cosx^2-sinx^2cosx^2

=1-sinx^2cosx^2

A = 1-sinx^2cosx^2

so th range of f (A)= 1-sinx^2cosx^2

is (-infinity, 1]