what will i substitute?

let z^2 = x + 4

x = z^2 - 4

dx = 2zdz

but its no use

i will get a result of

need help pls

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- Jul 31st 2007, 05:39 AM^_^Engineer_Adam^_^Integration - Algebraic substitution

what will i substitute?

let z^2 = x + 4

x = z^2 - 4

dx = 2zdz

but its no use

i will get a result of

need help pls - Jul 31st 2007, 05:52 AMtopsquark
- Jul 31st 2007, 05:58 AM^_^Engineer_Adam^_^
got it now thanks ts!