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Integration P1, question oct/nov 2008 question number 9

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nipuna92:
oct/nov 2008   question number 9


I did upto here, i dont get the subtraction
Can u continue from here and  please include every step in youyr answer

pi { (3x^2 /2) + (x) }

astarmathsandphysics:
When i get up

nipuna92:
ok i got the answer and understood
thanx

astarmathsandphysics:
you integrated correctly
put the limits in to get pi 2^2 pi(3*1^2/2 +1)-0=3pi/2

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