In this video I go over a useful example on applying the quotient rule for derivatives in determining the equation of a tangent line to a curve.

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Quotient Rule for Derivatives: Tangent Line Example

Quotient Rule Recap

If f and g are both differentiable, then:

Example

Find an equation of the tangent line to the curve y = e^x/(1+x²) at the point (1, e/2).

Solution