Chord → Tangent — Interactive
Type a function (use
^
for power). Hold
Shift
and drag the canvas to move
x₀
.
Function f(x)
x²
sin(x)
ln(x)
eˣ
x₀
Domain
-5 to 5
0 to 4
-2 to 6
Plot & Compute
▶ Animate h→0
h (secant half-width)
Institution / Author (optional)
Generate Printable Report
Download Graph PNG
Show symbolic
Symbolic (updates live)
\( \dfrac{f(x_0+h)-f(x_0-h)}{2h} \to f'(x_0) \)
Numeric
—
Show tangent
Show chord
Auto-scale Y
Graph — chord (secant) to tangent
Blue: f(x). Orange: tangent. Green: chord (secant). Central secant slope shown numerically near chord.