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Calculate the definite integral of y=x^2+x, if x=0 and x=1?

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sodelete | Student, College Freshman | eNoter

Posted July 18, 2011 at 6:32 PM via web

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Calculate the definite integral of y=x^2+x, if x=0 and x=1?

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giorgiana1976 | College Teacher | Valedictorian

Posted July 18, 2011 at 6:57 PM (Answer #1)

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To calculate the definite integral of the given function, within the given limits of integration, we'll apply Leibniz Newton formula:

b

`int` f(x)dx = F(b) - F(a)

a

1                           1                 1

`int` (x^2 + x)dx = `int` x^2 dx + `int` x dx

0                         0                 0

1

`int` (x^2 + x)dx = x^3/3 (x=0 to x=1) + x^2/2 (x=0 to x=1)

0

1

`int` (x^2 + x)dx = 1^3/3 - 0^3/3 + 1^2/2 - 0^2/2

0

1

`int` (x^2 + x)dx = 1/3 + 1/2

0

1

`int` (x^2 + x)dx = 5/6

0

The value of the definite integral of the given function, within the limits of integration x = 0 and x = 1, is 5/6.

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