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forsale [732]
2 years ago
5

∫ ex (sec x + tan²x) dx = ? a) eˣsec²x b) eˣsecx c) eˣtan²x d) eˣtanx

Mathematics
1 answer:
marysya [2.9K]2 years ago
6 0

None of these options seem to be correct. You can check each result by differentiation:

(e^x\sec^2x)'=e^x(\sec^2x+2\sec^2\tan x)=e^x\sec^2x(1+\tan x)

(e^x\sec x)'=e^x(\sec x+\sec x\tan x)=e^x\sec x(1+\tan x)

(e^x\tan^2x)'=e^x(\tan^2x+2\tan x\sec^2x)=e^x\tan x(\tan x+2\sec^2x)

(e^x\tan x)'=e^x(\tan x+\sec^2x)

But none of these are equivalent to e^x(\sec x+\tan^2x)...

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3 years ago
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