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3 cards from this section. Quick, good the night before a test.
What is A + B if A = [[1, 2], [3, 4]] and B = [[5, 6], [7, 8]]?
Add corresponding elements of each matrix.
If C = [[3, 3], [3, 3]], what is C - C?
Subtract elements from themselves.
Can you add a 2x3 and a 3x2 matrix?
Think about the shape of each matrix.
What is the first element of the resulting matrix if A = [[1,2], [3,4]] and B = [[5,6], [7,8]]?
Look at the top left corner of both matrices.
Prove that the sum of a matrix and its negative matrix results in a zero matrix through an example.
Subtract each element from itself.
A will be a 3x3 matrix with all elements equal to 1. Describe the addition of this matrix with a 3x3 matrix having all elements equal to 2.
Look at the total number of elements when you add them!
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