84 Section 7: Mathematics and Number-Alteration Functions
The Power Function
Pressing q calculates a power of a number – that is, y
x
. Like the arithmetic
function +, q requires two numbers:
1. Key in the base number (which is designated by the y on the key).
2. Press \ to separate the second number (the exponent) from the first (the
base).
3. Key in the exponent (which is designated by the x on the key).
4. Press q to calculate the power.
To Calculate Keystrokes (RPN mode) Display
2
1.4
2\1.4q
2.64
2
–1.4
2\1.4Þq
0.38
(–2)
3
2Þ\3q
–8.00
or 2
1/3
2\3yq
1.26
2
3