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WBJEE 2014 Maths Solved Paper
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© examsnet.com
Question : 53
Total: 80
I =
2
∫
0
e
x
4
(x - α) dx = 0, then α lies in the interval
(0, 2)
(–1, 0)
(2, 3)
(–2, –1)
Validate
Solution:
I =
2
∫
0
e
x
4
(x - α) dx = 0
e
x
4
> 0
(x – α) should be somewhere positive and somewhere negative so α ∈ (0, 2)
Hence a ∊ (0, 2)
© examsnet.com
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