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The following curve represent rate of ch...

The following curve represent rate of change of a variable y w.r.t. x. The charge in the value of y when x changes from 0 to 11 is :

A

60

B

25

C

35

D

85

Text Solution

Verified by Experts

As `dy=((dy)/(dx))dx` So `Deltay=intdy=int_(0)^(11)((dy)/(dx))dx`
Area under the curve
`A_(1)=(1)/(2)xx6xx20=60`
`A_(2)=-(1)/(2)xx(11-6)(10)=-25`
`Deltay=A_(1)+A_(2)=60-25=35`
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