GRE Subject Test: Math : Matrix Operations

Study concepts, example questions & explanations for GRE Subject Test: Math

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Example Questions

Example Question #1 : Matrix Operations

Perform the following operation.

  

Possible Answers:

Correct answer:

Explanation:

The first step to solving this operation is to do the multiplication:

  

Once we have multiplied the matrices, we can perform the addition portion:

Example Question #2 : Matrix Operations

Perform the following operation.

Possible Answers:

Correct answer:

Explanation:

The first step is to solve whatever is in the parentheses, in this case it is addition: 

We then substitute our solution into the parentheses:

Our next, and final step in this problem, is to carry out the multiplication:

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