Frequently Asked Questions

A calculus solver is a program that performs calculus operations, such as differentiation, integration and limits, symbolically, like a person would on paper, rather than only producing decimal approximations. This one also explains each step.

No. 2x, x sin(x) and (x+1)(x-1) are all understood. Add * whenever you want to be explicit, and check the “Reads as” preview.

Use / for fractions with parentheses around multi-term parts, such as (x+1)/(x-1). Use sqrt(x) or x^(1/2) for roots, and ^ for powers. For exponents longer than one term, use parentheses: e^(2x).

x is the default; t, y, z, u and θ are also available from the Variable menu. In derivatives and indefinite integrals, other letters are treated as constants.

Yes. The layout adapts to small screens, and the on-screen keypad (tap “Show keypad”) inserts symbols that are hard to type on a phone keyboard. Long expressions scroll inside their own box.

Yes. “Copy answer” copies plain text that the solver can read back in, and “Copy LaTeX” copies typeset math for documents and LaTeX editors.

Each answer is checked independently before it is shown: antiderivatives by differentiating them, definite integrals against numerical integration, limits by evaluating near the point, and derivatives against finite differences. The result panel tells you which check was done.

Either the problem has no answer in elementary functions (some integrals are like this) or it needs a method the solver doesn't support. Refusing is better than showing a wrong answer.

No. It uses deterministic computer algebra rules and established numerical methods, so the same input always gives the same output.

≈ marks a numerical approximation. It is typically accurate to about 10 significant digits, and is used when no exact form was found.

No. There is nothing to sign up for. Every calculator is available immediately.

No. Expressions are processed in your browser and are not stored, even locally. Reloading the page clears them.

Once a calculator page has fully loaded, solving does not need an internet connection, because the math engine runs on your device. You need a connection only to open new pages.

Using it to check your work and understand steps is a great way to learn. Whether you may use it on graded work depends on your teacher's rules, so always follow them.

Try the problem first. Then compare your work with the solver line by line and find the first place they differ. That is usually the rule you need to practise.

Start with the guides on derivative rules and integration techniques, then the explanations on each calculator page.