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Question
`int_4^9 1/sqrt(x)dx` = ______.
Options
4
2
3
1
MCQ
Fill in the Blanks
Solution
`int_4^9 1/sqrt(x)dx` = 2.
Explanation:
`int_4^9 1/sqrt(x)dx = int_4^9 x^((-1)/2)dx`
= `[x^(1/2)/(1/2)]_4^9`
= `2/1[sqrt(9) - sqrt(4)]`
= 2(3 – 2)
= 2
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