# Integration: The Limit of a Sum

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Find by the method of summation the value of :

a) The integral (from 0 to 1) of the square root of x. (dx)

b) The integral (from 1 to 4) of 1 divided by the square root of x. (dx)

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Integration as the limit of a sum (III)

Find by the method of summation the value of:

1 4

(a) ∫ √x dx (b) ∫ 1/√x dx

0 1

1

Solution: (a) ∫ √x dx Put √x = t , then ½ 1/√x dx = dt or , dx = 2t dt

0 When x = 0 => t = 0

When x = 1 => t = 1

1

...

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- BSc, Manipur University
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