Consider the following statements: 1. If y=\ln (\sec x+\tan x), then \frac{d y}{d x}=\sec x 2. If y=\ln ({\cosec} x-\cot x), then \frac{d y}{d x}={\cosec} x Which of the above is / are correct?

Correct Answer is : Both 1 and 2

UPSC NDA Math Model Paper 10

Question : 111 of 120

Marks: +1, -0

Consider the following statements:
1. If y=ln(sec‌x+tan‌x), then

=sec‌x
2. If y=ln(cosec‌x−cot‌x), then

=cosec‌x
Which of the above is / are correct?

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