Knowledge Base

Solution 10583: Inverse or Reciprocal Function on the TI-86.

How do I use the inverse function on the TI-86?

The inverse function, x^-1, on the TI-86 is accessed by pressing [2nd] [EE]. The inverse function will take the inverse of a number, list, function, or a square matrix.

To take the inverse of a number type in the number, press [2nd][EE], and then press [ENTER]. The inverse will be shown as long as the number does not equal 0. If the number, real or complex, equals 0 the ERROR 02 DIV BY ZERO will be returned.

To take the inverse of a list, type in the list name, press [2nd][EE], and then press [ENTER]. If an element in the list equals 0 the ERROR 02 DIV BY ZERO will be returned.

To take the inverse of a square matrix, type in the name, then press [2nd] [EE], and then press [ENTER]. If the matrices determinant equals 0 the ERROR 02 DIV BY ZERO will be returned.