indefinite-integration

Question: $\int_{{}}^{{}}{x{{\sec }^{2}}x\ dx}=$

1) $\tan x+\log \cos x+c$

2) $\frac{{{x}^{2}}}{2}{{\sec }^{2}}x+\log \cos x+c$

3) $x\tan x+\log \sec x+c$

4) $x\tan x+\log \cos x+c$

Solution:

Explanation: No Explanation

Integration by parts

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