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If f(x) = pe^(2x) + qe^x + rx satisfies...

If `f(x) = pe^(2x) + qe^x + rx` satisfies the condition `f(0)=-1, f' (In 2)=31 and int_0^(In4) (f(x)-rx)dx=39/2`, then the value of `(p+q+ r)` is equal to

A

`P=2, Q=-3,R=4`

B

`P=-5, Q=2,R=3`

C

`P=5,Q=-2,R=3`

D

`P=5, Q=-6,R=3`

Text Solution

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The correct Answer is:
D
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