Parabola: normal in parametric form (Normal at t has slope −t (perpendicular to tangent slope 1/t))
jee-mainjee-advanced
Normal at t has slope −t (perpendicular to tangent slope 1/t)
What each symbol means
| Symbol | What it stands for |
|---|---|
| t | Parameter |
When to use this
y² = 4ax; t ≠ 0 for finite normal slope vs horizontal tangent.