Helper for grades 7–11. All calculations run locally in your browser.
What works / what does not
✓ Linear equations ax + b = c with steps✓ Quadratic equations (discriminant, roots)✓ Plot y = f(x): polynomials, sin, cos, sqrt✓ Pythagoras (legs → hypotenuse), circle S and C✗ Derivatives, integrals, limits✗ Systems of equations, 3+ unknowns✗ Inequalities, intervals✗ OGE/EGE exam format — use the OGE / EGE trainer