The Power Function (yx)
To calculate a number, y, raised to a power, x, key in y Ienter Ix f>*1.
For y > 0, x can be any rational number. For y < 0, x must be an
integer. For y = 0, x must be positive.
1.4 I+/-II ENTER I 3 I>*I
$2 or 2,/3
2 | ENTER | 3 11/x 11y I
Press HIDE) to place the first 12 digits of tt into the X-register. (The
number displayed depends on the display format.) Because this is a
function, ir does not need to be separated from another number by
I ENTER I.
Note that a calculator cannot exactly represent -k, since ir is an irratio
Setting the Angular Mode
The angular mode specifies which unit of measure to assume for an
gles used in trigonometric functions. The mode does not convert
numbers already present (see 'Conversion Functions* in this chapter).
4: Real-Number Functions