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Exercise 4

Avg difficulty 3.0

Give the size of the product or state “not defined”.

  • a 2 ⁣× ⁣32\!\times\!3 matrix times a 3 ⁣× ⁣13\!\times\!1 matrix

  • a 1 ⁣× ⁣121\!\times\!12 matrix times a 12 ⁣× ⁣112\!\times\!1 matrix

  • a 2 ⁣× ⁣32\!\times\!3 matrix times a 2 ⁣× ⁣12\!\times\!1 matrix

  • a 2 ⁣× ⁣22\!\times\!2 matrix times a 2 ⁣× ⁣22\!\times\!2 matrix

Hefferon, Linear Algebra, Maps Between Spaces, Matrix Multiplication, Exercise 4

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Adapted from Linear Algebra © 2016 Jim Hefferon. Licensed under CC BY-SA 3.0 US. Source: Linear Algebra. Imported at revision df2262e.