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# Mastering Scalar Multiplication and Matrix Matriculation

Created by
@WellInformedLemur

### Which one of these statements is true about scalar multiplication?

• Scalar multiplication is denoted by PkP.
• Scalar multiplication is denoted by k.
• Scalar multiplication is denoted by Pk.
• Scalar multiplication is denoted by kP. (correct)
• ### Which one of these is the correct product of matrices X and Y?

• XY = X - Y
• XY = Z (correct)
• XY = X * Y
• XY = X + Y
• ### Which one of these is the correct formula for calculating Z11 in the matrix product XY?

• Z11 = x11y12 + x12y22
• Z11 = x21y11 + x22y21
• Z11 = x11y11 + x12y21 (correct)
• Z11 = x21y12 + x21y22
• ### Given the matrix A = [(3&-2@4&1@-5&2)], what is the result of 3A?

<p>[(9&amp;-6@12&amp;3@-15&amp;6)]</p> Signup and view all the answers

### Given the matrices A = [(3&-2@4&1@-5&2)] and B = [(5&-2&4@1&3&6)], what is the result of AB?

<p>[(13&amp;-10&amp;-2@24&amp;-1&amp;14@-35&amp;-4&amp;-4)]</p> Signup and view all the answers

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