$\blacktriangleright$    To enter a case expression

  1. Enter the expression to the left of the =.

  2. Enter the =.

  3. Create a matrix.

  4. Enclose the matrix in brackets with an empty right bracket. The empty bracket is shown in the Brackets dialog box as itbpF13.0625pt22.4375pt4ptempty.wmf.

  5. Enter the case expression in the matrix.