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Thread: Integration

  1. June 11th 2008, 08:13 PM #1
    Jonny-123
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    Exclamation Integration

    How do you find the the integral of sin(√x)/√x??
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  2. June 11th 2008, 08:17 PM #2
    Mathstud28
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    Quote Originally Posted by Jonny-123 View Post
    How do you find the the integral of sin(√x)/√x??
    \int\frac{\sin(\sqrt{x})}{\sqrt{x}}dx=2\int\frac{\ sin(\sqrt{x})}{2\sqrt{x}}dx
    Is it more obvious now?

    If not

    Let \xi=\sqrt{x}

    So then d\xi=\frac{1}{2\sqrt{x}}

    So we have

    2\int\sin(\xi)d\xi

    Can you go from there?
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