Numerical Derivative
Calculus
Slope of any expression in x at a chosen point.
Inputs
Results
Frequently asked questions
▶What does the Numerical Derivative do?
The Numerical Derivative is an interactive calculus lab where you change inputs and the answers update live, helping you build intuition without doing the arithmetic by hand.
▶Who should use the Numerical Derivative?
Students from primary to senior secondary classes, parents helping with homework, and anyone revising calculus can use this lab to check answers and explore "what-if" scenarios.
▶Is the Numerical Derivative free to use?
Yes. Every lab on math.suparnpatra.com is free and runs entirely in your browser : nothing is sent to a server.
▶Does the Numerical Derivative work offline?
Once the page is loaded, all calculations run locally in JavaScript, so you can keep using it even on a flaky connection.
▶How accurate are the results?
Results use standard JavaScript double-precision arithmetic and the textbook formula for calculus. We never display scientific notation : numbers are shown as ordinary decimals you can read at a glance.