Under which one of the following conditions does the function f(x)=(p‌sec‌x)2+(qcosecx)2 attain minimum value ?

[NDA II 2022]

Question

Under which one of the following conditions does the function f(x)=(p \sec x)^2+(q cosec x)^2 attain minimum value ? [NDA II 2022]

Examsnet · Accepted Answer

Correct Answer is : tan2x=‌qp

NDA Math Application of Derivatives