Calculus

Instacalc does calculus directly from plain expressions. Derivatives come back symbolically (with steps); definite integrals, limits, and sums evaluate to a number.

Derivatives

Use derive or derivative of. The result shows the symbolic derivative and the rule used (power rule, sum rule, trig derivative, …) — click Show steps to expand the work.

Plot a function together with its derivative to see the relationship — where x² is steepest, its derivative 2x is largest:

Integrals

Definite integrals evaluate to a number. Give the bounds with from … to …:

Limits

Sums

Sum a sequence over an index range with from … to …:

Notes

• Trig defaults to degrees. For calculus on trig functions you usually want radians — add // @radians to the calc, or write the angle in radians explicitly (sin(x rad)). See Science & Engineering.

See also

• Graphing — plot a function and its derivative
• Solving Equations — solve, roots, goal-seek
• Reference — full function list