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anonymous

  • 5 years ago

If you do a u sub on an integral and the du has an x that doesn't cancel out, can you take it out of the integral as a constant with the x

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  1. anonymous
    • 5 years ago
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    you can't.. you have to make the whole new integral in term of u, and get rid of all x's

  2. anonymous
    • 5 years ago
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    ^^ if I understood your question well*

  3. anonymous
    • 5 years ago
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    what you can do is express that x as a function of u, so the integrand is entirely a function of u and not x. (for definite integral, you also need to change your limits from x values to u values)

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