1.

The set of values of alpha (alpha gt 0) for which the inequality int_(-alpha)^(alpha) e^x dx gt 3/2 holds true is :

Answer»

`(0, oo)`
`(2,oo)`
`(ln2, oo)`
None of these

SOLUTION :`2e^(2ALPHA) - 3e^(alpha) - 2 gt 0 RARR E^(alpha) lt -1/2 " or " e^(alpha) gt 2`
But `e^(alpha) gt 0 AA alpha in R rArr e^alpha gt 2`
`i.e. alpha in (log2, oo)`


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