Matrix-Vector Product Calculator

Multiply an m×n matrix by an n-dimensional vector to get the m-dimensional product vector, with dimension checking.

Input

Enter the matrix one row per line and the vector to compute the product Av.

Matrix A (m×n)

One line per matrix row. Separate entries with spaces or commas.

Vector v (n-dimensional)

Enter on one line or one entry per line.

Product vector Av

( -2, -2 )

Matrix size

2×3

Vector dimension

Result dimension

Components of the product vector

Index	Value
1	-2
2	-2

The product Av of an m×n matrix A and an n-dimensional vector v is an m-dimensional vector whose i-th entry is Σ_j A[i][j]·v[j].
The product is only defined when the matrix's column count n matches the vector's dimension n (otherwise a size-mismatch error is shown).
Enter the matrix one row per line, separating entries with spaces or commas. Every row must have the same number of columns.
Enter the vector as a single line or one entry per line; spaces, commas, and newlines all work as separators.

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