Calculus doubt

Q5 please , not getting tried many manipulations and btw amswer of 3 and 4 is c and d if it helps in process


@anon40123845_ashwin
Can u check whether this is the ans given ?

Bro cospi = -1 so it will be e^1+cospit thats why im stuck at too. e constant is taken out

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No answer is same like you but it has f’(t) rather than f(t) in integration your answer and method is wrong

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ohk my bad

What book is this bro @anon40123845_ashwin . ?

Bro in the last 2nd step there is a negative sign in between… I don’t think you can combine the two integrals…

Black book took me 3 hours to complete integration complete