Differentiate with respect to x the function 2 sec x
A
2sec x tan x
B
-2 sec\(^2\) x
C
2 sec\(^2\) x
D
-2 sec x cos x
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
This is a standard trigonometric derivative
Therefore,
\(\frac{d}{dx}\)(2 sec x) = 2 sec x tan x.
Source: Myschool Past Questions Archive (Record #78169)