Function Calculator
Evaluate a mathematical function f(x) at a given value using the built-in expression parser.
Inputs
Use x as the variable. Supports: +, -, *, /, ^, sqrt, sin, cos, tan, ln, exp, abs, etc.
f(x)
5.00000000
Expression Evaluated
f(2) = 5
Step by step
Values used
f(x) = x^2 + 3*x - 5; x value = 2
Function evaluation
f(x) = [your expression evaluated at the given x]
f(x)
= 5.00000000
Expression Evaluated
= f(2) = 5
How it works
This calculator evaluates any mathematical expression at a given value of x using the built-in expression parser. Supported operations include arithmetic (+, -, *, /, ^), trigonometric functions (sin, cos, tan), logarithms (ln, log), exponentials (exp), square roots (sqrt), and more.
Formula
Function evaluation
f(x) = [your expression evaluated at the given x]
- x
- The input value
- f(x)
- The computed result
Frequently Asked Questions
What functions are supported?
sin, cos, tan, asin, acos, atan, ln, log (base 10), exp, sqrt, cbrt, abs, floor, ceil, round, and constants pi and e.
How do I write exponents?
Use ^ for exponentiation: x^2 means x squared, x^(1/3) means cube root of x.