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If P=sum(r=3n)^(r=4n-1)[(r^(2)+13n^(2)-7...

If `P=sum_(r=3n)^(r=4n-1)[(r^(2)+13n^(2)-7m)/(n^(3))]` & `Q=sum_(r=3n+1)^(r=4n)[(r^(2)+13n^(2)-7m)/(n^(3))]` Then

A

`Pgt5/6`

B

`Qlt5/6`

C

`Qgt5/6`

D

`Plt5/6`

Text Solution

Verified by Experts

The correct Answer is:
A, B
`f(x)=x^(2)-7x+13`
In both cases gain `gt` loss
`impliesP gt int_(3)^(4)f(x)dx` & `Qgtint_(3)^(4)f(x)dx`
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