# Question: How do you multiply 3x3 determinants?

Contents

## How do you multiply 3x3 vectors?

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## What happens if you multiply a vector?

Multiplication of a vector by a scalar changes the magnitude of the vector, but leaves its direction unchanged. The scalar changes the size of the vector.

## Can you add a 2x3 and 3x3 matrix?

It is easy to add and subtract matrices. In order words, you can add or subtract a 2x3 with a 2x3 or a 3x3 with a 3x3. However, you cannot add a 3x2 with a 2x3 or a 2x2 with a 3x3.

## Can you multiply matrices with different dimensions?

You can only multiply two matrices if their dimensions are compatible , which means the number of columns in the first matrix is the same as the number of rows in the second matrix.

## What happens if you multiply a vector by 0?

If a vector is multiplied by zero, the result is a zero vector.

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

To multiply a vector by a scalar, multiply each component by the scalar. If →u=⟨u1,u2⟩ has a magnitude |→u| and direction d , then n→u=n⟨u1,u2⟩=⟨nu1,nu2⟩ where n is a positive real number, the magnitude is |n→u| , and its direction is d .