Normal to parabola y² = 4ax at a point (Slope of normal = −y₁/(2a) (at point on y²=4ax))
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Slope of normal = −y₁/(2a) (at point on y²=4ax)
What each symbol means
| Symbol | What it stands for |
|---|---|
| a | Parameter |
| (x_1,y_1) | Point on parabola |
When to use this
Tangent slope 2a/y₁ ⇒ normal slope −y₁/(2a).