JEE Math Practice Question
If ƒ'(x) = tan–1(secx + tanx), $$ - {\pi \over 2} < x < {\pi \over 2}$$, and ƒ(0) = 0, then ƒ(1) is equal to :
- A.$${1 \over 4}$$
- B.$${{\pi - 1} \over 4}$$
- C.$${{\pi + 1} \over 4}$$
- D.$${{\pi + 2} \over 4}$$
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