Parabola: focal distance SP (Distance from focus to point on parabola equals a times)
jee-mainjee-advanced
Distance from focus to point on parabola equals a times (1 plus t squared)
What each symbol means
| Symbol | What it stands for |
|---|---|
| P | Point (at²,2at) |
| S | Focus (a,0) |
| t | Parameter |
When to use this
y² = 4ax, vertex at origin.