# How do you multiply 2×4 and 4×2 matrices?

## How do you multiply 2×4 and 4×2 matrices?

Step 1: Determining if Two Matrices Can Be Multiplied A is a 2×4 matrix and B is a 4×2 matrix. To see if you can multiply these matrices, place their dimensions next to each other in the order of the operation: AB = (2×4)(4×2).

## Is 2×4 matrix possible?

Multiplication of 4×2 and 2×4 matrices is possible and the result matrix is a 4×4 matrix.

**Can you multiply a 4×2 and 2×2 matrix?**

Multiplication of 4×2 and 2×2 matrices is possible and the result matrix is a 4×2 matrix.

### What is a 3 by 2 matrix?

When we describe a matrix by its dimensions, we report its number of rows first, then the number of columns. Matrix A is therefore a ‘3 by 2’ matrix, which is written as ‘3×2. Matrix B has 2 rows and 3 columns. We call numbers or values within the matrix ‘elements.

### Can you multiply a 2×4 and a 4×1 matrix?

Multiplication of 2×4 and 4×1 matrices is possible and the result matrix is a 2×1 matrix.

**Can you multiply a 2×3 and 2×2 matrix?**

Solution: We cannot multiply a 2×2 matrix with a 3×2 matrix. Two matrices can only be multiplied when the number of columns of the first matrix is equal to the number of rows of the second matrix.

## Can a matrix be multiplied to a 4×4?

The multiplication of two 4×4 matrices gives a 4×4 matrix (this rule isn’t so important for us because we will almost always use 4×4 matrix so we generally won’t care about whether matrices can be multiplied or not).

## Can you create a 3×3 matrix in CG?

You can create a 3×1 matrix, a 6×6 matrix or a 4×2 matrix. They are all valid matrices. But as we said, in CG, we will mainly be using 3×3 and 4×4 matrices.

**Can you multiply two matrices M1 and m2?**

Two matrices M1 and M2 can only be multiplied if the number of columns in M1 is equal to the number of rows in M2. In other worlds if two matrices can be written as m x p and p x n they can be multiplied and it will give a matrix of size m x n.

### How do you multiply a matrix by a number?

To multiply a matrix by a single number is easy: These are the calculations: We call the number (“2” in this case) a scalar, so this is called “scalar multiplication”. But to multiply a matrix by another matrix we need to do the “dot product” of rows and columns