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

# Calculus doubt

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 fâ€™(t) rather than f(t) in integration your answer and method is wrong

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ohk my bad

Bro in the last 2nd step there is a negative sign in betweenâ€¦ I donâ€™t think you can combine the two integralsâ€¦

Black book took me 3 hours to complete integration complete