If _0^/2sinx/sinx + cosxdx = g''(x) + C where g'(1) = 1 then C will be
The trick is we verify C = /4 - 1 by full calculation: use standard identity, substitute, simplify step by step to reach C = /4 - 1.
Ref: NCERT Mathematics Class XII — Integrals
#g''
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