Question

If f(x)=cos²x+sec²x,then f(x)

Answer 1

Step-by-step explanation:

$f(x) = { \cos}^{2} x + { \sec }^{2} x$

f'(x) =

$\frac{d}{dx} - \sin(2x) + 2 { \sec }^{2}x \tan \: x$