The value of loge 2 d/dx (logcosx cosec x) at x = π/4 is ​

Question

The value of log_e \(2\frac d{dx}\) (log_cosx cosec x) at x = \(\frac \pi 4\) is 

(A) -2√2

(B) 2√2

(C) -4

(D) 4

Answer 1

Correct option is (D) 4

Comments

Very good