The size of two matrices is given. Find the size of the product AB and the product BA, if the products exist.A is 1 × 4, B is 1 × 4.
A. AB is 4 × 1, BA is 1 × 4.
B. AB is 1 × 1, BA is 4 × 4.
C. AB is 1 × 4, BA is 4 × 1.
D. AB is undefined, BA is undefined.
Answer: D
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A. A = 30.8°, B = 125.1°, C = 24.1° B. A = 30.8°, B = 24.1°, C = 125.1° C. A = 125.1°, B = 30.8°, C = 24.1° D. A = 125.1°, B = 24.1°, C = 30.8°
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