Normal to a Curve

Rarely Tested

Normal to a Curve

If the tangent slope at:

$$(x_1,y_1)$$

is:

$$m=f'(x_1)$$

then the normal equation is:

$$y-y_1=-\frac{1}{m}(x-x_1)$$

provided $$m\neq0$$.

Usage

- Used to find the normal line to a curve at a given point.

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