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    				| 1. | Integrate the with respect to x.ex sec x (1 + tan x) | 
| Answer» Let I = ∫ex (sec x + sec x tan x) dx Take f(x) = sec x f‘ (x) = sec x tan x This is of the form of ∫ex[f(x) + f'(x)] dx = ex f(x) + c = ex sec x + c | |