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First post, hopefully it will be readable. I was going to try and word it correctly, but I might as well just post a problem I am having with a certain notation.

Take integral of e^6x. Easy enough question. Using U substitution:

u = 6x

du/dx = 6

du = 6 dx

Integral above now equals 1/6 e^6x + C (so the 1/6 cancels with our 6 in 6 dx).

Ok, now using dy/dx = dy/du * du/dx notation.

e^6x let u = 6x

y = e^u

u = 6x

dy/du = e^u

du/dx = 6

Since dy/dx = dy/du * du/dx, wouldn't the above equal e^6x * 6

The second notation confuses me a bit... Any help to explain would be appreciat

Thanks,

M

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# Substitution Question

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