Test Menu

Press   to view the test menu.

Press the number associated with a symbol or use the cursor keys to select one and press .

The relationship between any two numbers, expressions, lists, or matrices can be compared by selecting one of the options. A 1 will be returned if the test is true and a 0 if the test is false. For example, the test, 4 > 7, returns a value of 0 since it is a false statement. Tests can also be made on statements such as

x = 9 or x < 2.5

The result of such a test depends upon the value of the variable x. This type of comparison is often used to control the domain over which a graph is drawn.

When comparing lists and matrices, each element in the first list or matrix is compared to its corresponding element in the second list or matrix. For example, note the results of the following comparison between the two 3 element lists.

The {1 1 0} indicates the first two comparisons are true, while the third is false.

Note: The type of operators that are compared must have the same dimension. For example, a list of 5 elements can not be compared with a list of 6 elements.