Precalculus Calculator

A free precalculus calculator solves common precalculus problems—functions, equations & inequalities, trigonometry, conic sections, polar and parametric equations, and sequences & series—with step-by-step explanations.

• 1. Functions (evaluate, compose, transform, inverse)
• 2. Equations (polynomials, rational, exponential, logarithmic)
• 3. Inequalities (linear, quadratic, rational)
• 4. Trigonometry (identities, equations, unit circle values)
• 5. Conic Sections (circle, parabola, ellipse, hyperbola)
• 6. Polar Coordinates (convert, graph, simplify)
• 7. Parametric Equations (eliminate parameter, graph)
• 8. Sequences & Series (arithmetic, geometric, sigma notation)

Enter your expression (use parentheses to control order), tap Solve, and learn the method, not just the answer.

• 1. Enter a question (e.g., f(x)=2x+3, g(x)=-x^2+5, f(g(x)))
• 2. Click "Solve"
• 3. Review the step-by-step explanation

y=x^(2)+4

f(x)=3x^(2)

x=2-3t,y=5+t

(-2,0),(4,0)

f(x)=x^(2)-4

11^(x)=12