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Ankit posted an Question

May 30, 2020 • 15:24 pm

30 points

IIT JAM
Mathematics (MA)

1 ) d 9t) co e 2 9)

2 Answer(s)

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Priyadarshan Choursiya Best Answer

you already change y in u and limit also. so you have no need to change u again in y
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P
Priyadarshan Choursiya

you are doing wrong. you are trying to put value of u in y. check your solution carefully
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sir in 2nd question integral is with respect to y.. so i put value of y in u.. please tell me my mistake
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P
Priyadarshan Choursiya

I accidentally put X=0 instead of y=0
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P
Priyadarshan Choursiya

sorry I do some mistake in second question answer is e^(-x)
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Priyadarshan Choursiya

please complain about it. it happens so many times. I attached some part but they are not shown.
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A
Ankit

sir check this
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A
Ankit

sir check this..
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Priyadarshan Choursiya

see attachment. here f(X) = something which doesn't contain X, it means it is constant
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what about question 1.
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sir when we are solving this integral we take x(y+1) as some variable u, then we change the limit from 0 to infinity to x to infinity.. via this we should get e^(-x(x+1) ) as ans.
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