Evaluating and Solving
1 EVAL I
1 SOLVE I
allow you to do calculations involving variables.
For example, suppose you frequently need to determine the volume of
a straight section of pipe. The equation is:
where d is the inside diameter of the pipe, and I is its length. You
could key in the calculation over and over; for example, .25
calculates the volume of 16 inches of 21f2-inch pipe.
However, storing the equation saves keystrokes and lets you use the
calculator to '"remember' the relationship between diameter, length,
Displays the list of
If necessary, press [!] until the HP-22S displays
TYPE NEW EQN.
STO I D
6: Evaluating and Solving Equations
1 STO I
[Z) types ".