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Home > A2C > Chapter 7 > Lesson 7.3.1 > Problem 7-155


Let G be the matrix shown at right.

  1. What is g1,3

    g3,2 is the entry in the 3rd row and 2nd column. For the given matrix, g3,2 is −6.

  2. Two matrices can be added only if they have the same dimensions. If matrix H can be added to matrix G, what must be the dimensions of H?

    See part (a).

  3. All the entries of the zero matrix are . Write the zero matrix with the same dimensions as .

    See part (a).

  4. Create a matrix to add to matrix G to get the zero matrix. This is called the additive inverse of a matrix. What could you name your new matrix to show its relationship to ?