CBSE Class 12 Math 2009 Solved Paper

Question : 2

Total: 29

Evaluate: ∫ sec2 (7 - x) dx

Solution:

∫ sec2 (7 - x) dx
Substituting 7 - x = t ⇒ - dx = dt
∴ I = - ∫ sec2 t . dt
= - tan (7 - x) + c

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