defence exam ITBP (Telecommunication) Head Constable Mock Test 2024 Mathematics Differential Calculus Differentiation by substitution
\({\rm{x}} = \frac{{\rm{\pi }}}{4}?\) पर फलन f(x) = etan x + ln(sec x) – eln x का अवकलज क्या है?
1
e/2
2
e
3
2e
4
4e