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If ∫ sec x (sec x tan x f(x) + (sec x tan x + sec^2 x)) dx = e^secx f(x) + C, then a possible choice o f(x) is :

+2 votes
in JEE by kratos

If ∫ sec x (sec x tan x f(x) + (sec x tan x + sec2 x)) dx = esecx f(x) + C, then a possible choice o f(x) is :

(1) secx – tanx - 1/2

(2) secx + xtanx - 1/2

(3) secx + tanx + 1/2

(4) xsecx + tanx + 1/2

1 Answer

+1 vote
by kratos
 
Best answer

Correct option (3) secx + tanx + 1/2

Explanation:

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