# Derivatives and Tangents to a Curve

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Here's what I have so far. I'm writing an equation for a line tangent to the curve

y = at point P(-1,7). Using the power rule for a negative integer I found

f(x) = .

I'm still having some problems with my derivatives. You can see my work below but I've made a mistake somewhere. I don't need help with anything other than finding f'x

=

=

= = 1

https://brainmass.com/math/derivatives/derivatives-tangents-curve-91414

#### Solution Preview

You did a mistake with evaluation of f(x+h). I have shown you how ...

#### Solution Summary

Derivatives and Tangents to a Curve are investigated. Tangent lines to the curve and equations are determined.

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