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Graphing Calculator
Plot any function of x. Separate multiple functions with semicolons.
f(x) =
Supported syntax
Write expressions as a function of x. Use * for multiplication — 2*x, not 2x. Powers can be written as x^2 or x**2.
Trig
sin(x), cos(x), tan(x), asin(x), acos(x), atan(x)
Power / root
sqrt(x), x^2, x^0.5, pow(x,3)
Logarithm
log(x) — natural log, log10(x), log2(x)
Other
abs(x), exp(x), floor(x), ceil(x), round(x)
Constants
PI (3.14159…), E (2.71828…)
Multiple functions
Separate with semicolons: x^2; sin(x)
Example functions to try
x^2 - 4
Upward parabola crossing x-axis at ±2
sin(x) / x
Sinc function — oscillates and decays
x^3 - 3*x
Cubic with local min and max
sqrt(25 - x^2)
Upper half of a circle, radius 5
abs(sin(x))
Rectified sine wave (all positive)
1 / (1 + exp(-x))
Sigmoid / logistic function
Frequently Asked Questions
Use standard math notation: x^2 or x**2 for powers, sin(x), cos(x), tan(x), sqrt(x), abs(x), log(x) (natural log), log10(x), exp(x). Constants: PI and E. Examples: sin(x)*x, x^3-2*x+1, sqrt(abs(x)).