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- Thread starter DrMath
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- #1

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- #2

lanedance

Homework Helper

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couple of points though, it is usually easier to use a different dummy variable when you use a subtitution

say you have

[tex] \int_b^a dt f(t) [/tex]

and want to change to u(t) = t/2, then

t=2u

dt = 2.du

u(a) = a/2

u(b) = b/2

so the integral becomes

[tex] \int_{b/2}^{a/2} 2.du f(2u) [/tex]

see how this compares with your case...

- #3

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thanks

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