Differentiate y=e^(x^2+2x)

For this question the chain rule should be used, the chain rule is that dy/du*du/dx=dy/dx.

If we say u=(x2+2x) and therefore y=eu

Then du/dx=2x+2 and dy/du=eu.

Then dy/du*du/dx= (2x+2)eu, then we can sub u back into the answer to obtain dy/dx=(2x+2)e(x^2+2)

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Answered by Duncan F. Maths tutor

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