Question

What is scalar multiplication on matrices?

Options

• Adding a matrix to its negative gives the zero matrix.

• A single real number (scalar) multiplies every entry of a matrix.

• A matrix multiplies every entry of a single real number (scalar).

• The order of matrix changes after scalar multiplication.

Answer 1

Scalar multiplication is a basic operation on matrices. A single real number, called a scalar, multiplies every entry of a matrix.