HP HP-67 - Page 109

Function Keys 105
For example, to calculate 2° (thatis, 2 X2 X2 X2 X2 X2 X2 X2
X 2):
Press Display
2
GNED
9
512.00
To calculate 812567
Press Display
8
1.2567
To calculate (—2.5):
Press Display
2.5
5 [5 ]
0
In conjunction with (&), %) provides a simple way to extract roots.
For example, find the cube root of 5. (This is equivalent to 513)
Press Display
5
30
Reciprocal
of
3.
1.71 Cube root of 5.