Quadratic equation solver

a

b

c

Evaluate at x (optional)

Matrix calculator

Up to 4×4 matrices. Use integers or decimals. We detect singular matrices for inverse and multiply compatibilities.

Matrix A size

Matrix B size

Scalar k

Operations: A+B, A−B, A×B, k×A, det(A), inv(A), rank(A)

Optional ad slot

System size

Enter coefficients for Ax = b

Quadratic: handles real and complex roots, vertex, axis of symmetry, and evaluation at a point. If a = 0 we fall back to linear bx + c = 0.
Matrix: inverse, determinant, and rank use Gaussian elimination with partial pivoting. If a matrix is singular we’ll tell you.
Linear systems: Gaussian elimination with detection for no solution or infinite solutions.