Function Calculator

Evaluate mathematical functions at given values with step-by-step solutions and graph analysis.

Enter Function and Value

Function: f(x) = 2x + 3

Quick Examples:

About Functions

What is a Function?

A function is a relation that assigns exactly one output for each input. In mathematics, functions are used to model relationships between variables.

How to Evaluate a Function?

  1. Write the function in terms of x.
  2. Substitute the given value for x.
  3. Calculate the result.

Applications in Real Life

  • Physics and engineering formulas
  • Economics and finance models
  • Computer programming

Frequently Asked Questions

Can I use trigonometric or exponential functions?

Yes, you can enter functions like sin(x), cos(x), e^x, etc.

What if I enter an invalid function?

The calculator will show an error if the function cannot be evaluated.