FertiJourney Dev Tools
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Numerical Derivative & Tangent Line
Compute f′(x₀) with central differences and draw the tangent line on the curve.
Function f(x)
Preset
Custom…
sin(x)
cos(x)
x²
x³
x²−2x
√x
eˣ
ln(x)
1/x
Point x₀
X range
Plot
Clear
Enter f(x) and a point x₀ to compute the numerical derivative and draw the tangent.