Frequently asked questions
How do I find the second derivative?
Set the order to 2 in the options, or type “second derivative of …”.
Can I get the slope at a point?
Enter a value in “at x =”. You'll get f′ at that point and the equation of the tangent line.
Other calculators
Calc SolverCalc Solver solves arithmetic, algebra, equations, derivatives, integrals and limits with clear step-by-step workingScientific CalculatorFree online scientific calculator with trig, logs, powers, roots, factorials, nPr/nCr, memory and degree/radian modesGraphing CalculatorPlot several functions at once, zoom and pan, trace points, and find roots and intersections with this free online graphing calculatorEquation SolverSolve linear, quadratic, cubic, rational, radical, exponential, log and trig equations for x with full step-by-step working and a graphIntegral CalculatorIntegrate step by step: power rule, u-substitution, integration by parts, partial fractions and trig identitiesLimit CalculatorEvaluate limits step by step with substitution, factoring, L'Hôpital's rule and limits at infinitySystem of EquationsSolve 2×2, 3×3 and larger systems by elimination, substitution, Cramer's rule or Gauss–Jordan row reduction, with every step shownInequality SolverSolve linear, compound, quadratic, polynomial, rational and absolute value inequalities with a sign chart and interval notationSimplify & ExpandSimplify algebraic expressions, expand brackets with FOIL, cancel rational expressions, find partial fractions and evaluate expressions step by stepFactoring CalculatorFactor polynomials step by step: greatest common factor, difference of squares, perfect squares, the AC method, sum and difference of cubes and rational rootsFraction CalculatorAdd, subtract, multiply and divide fractions and mixed numbers with stepsPercentage CalculatorFind X% of Y, what percent one number is of another, percent change, percent increase and decrease, and the original value — with stepsMatrix CalculatorDeterminant, inverse, transpose, rank, RREF, powers, addition and multiplication of matrices up to 6×6, with stepsStatistics CalculatorPaste a list of numbers to get mean, median, mode, range, quartiles, variance and standard deviation (sample and population) with steps