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Prove that int(0)^(a) f(x) dx = int(0)^(...

Prove that `int_(0)^(a) f(x) dx = int_(0)^(a) f(a - x)dx` and hence evaluate the following:
(a) `int_(0)^(a) (sqrt(x))/(sqrt(x) + sqrt(a) - x)dx`

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Knowledge Check

  • int_(1)^(3)(sqrt(4-x))/(sqrt(x)+sqrt(4-x))dx=

    A
    2
    B
    0
    C
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    D
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  • int(e^(sqrt(x)))/(sqrt(x)) dx =

    A
    `e^(sqrt(x))`
    B
    `(e^(sqrt(x)))/(2)`
    C
    `2e^(sqrt(x))`
    D
    `sqrt(x) e^(sqrt(x))`
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