Quadratic Estimate through Three Points
Use three points wey get different x values evaluate quadratic interpolant.
Your numbers
y value wey interpolation give
Use consistent units. Result follow the assumptions wey you enter.
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You fit keep up to three snapshots for this tab. Loading one go replace the present inputs.
Formula
Use y = Σ yᵢ ∏ⱼ≠ᵢ (x−xⱼ)/(xᵢ−xⱼ) across di three points (xᵢ,yᵢ) wey you enter. x na target coordinate. Di input horizontal coordinates must differ; outside their range, di polynomial na extrapolation.
Use three points wey get different x values evaluate quadratic interpolant.
Example wey show the calculation
- Point number 1: x
- 0
- Point number 1: y
- 0
- Point number 2: x
- 1
- Point number 2: y
- 1
- Point number 3: x
- 2
- Point number 3: y
- 4
- x value wey you want estimate for
- 1.5
- y value wey interpolation give
- 2.25
Where e fit work and limits
Use consistent units. Result follow the assumptions wey you enter.
We check inputs for missing values and allowed ranges. Result wey pass the finite numeric range no go show. Rounding affect wetin display, while calculation use the model numeric precision.
Check your units and assumptions before you rely on result. Changing label no convert currency or physical unit.
Version of di formula: 764e5e975c03 · Example don get check: