If b=\\int_{0} ^{1} {e^{t}}/{t+1} d t, then \\int_{a-1} ^{a} {e^{-1}}/{t-a-1} is

WBJEE 2021 Math Solved Paper

CATEGORY - II (Q51 to Q65)

Carry 2 marks each and only one option is correct. In case of incorrect answer or any combination of more than one answer, ½ mark will be deducted.

Question : 63 of 75

Marks: +1, -0

If b=

∫

t+1

dt, then

∫

a−1

e−1

t−a−1

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