Differential approximation (dy = f'(x)dx; Δy ≈ dy for small Δx)
jee-mainjee-advanced
dy = f'(x)dx; Δy ≈ dy for small Δx
What each symbol means
| Symbol | What it stands for |
|---|---|
| dx | Differential of x (think Δx small) |
| dy | Corresponding change along tangent |
When to use this
f differentiable; Δx small.