HP 48g Graphing Calculator - Manual (Page 90)

A number or alpha character and the divide bar, square-root
symbol, or Kth root term—for example, B
Note All multiplication (even implied multiplication)
should display a multiplication operator (* or "), In
particular, an expression such as X
no multiplication. The form, >, is a user-defined
function (see page 11-6), whose parentheses
contain its argument. By contrast, expressions
such as K*i!V+Z) or (Y+Z) do include valid
multiplications.
To include division and fractions:
1. Press to start the numerator.
2. Press IQ to end the numerator and start the denominator (®
works too).
3. Press to end the denominator.
Here’s another way to type in fractions whose numerator consists of
either one term or a sequence of terms with operators of precedence
greater than or equal to that of division:
1. Type the numerator (without pressing (A)).
2. Press © to start the denominator.
3. Press to end the denominator (® works too).
To include exponents:
1. Press El to start the exponent.
2. Press ® to end the exponent (® works too).
To include roots:
■ To include a square root, press to draw the i symbol and start
the term, then press ® to end the term.
■ To include an rth root, press (S(W) to start the x term (outside
the -f S 3 mabol), press (Q to draw the ■ ■ f symbol and start the y term
inside the -i symbol, then press ® to end the .rth root term.
1. Press the function key, or type the name and press (30-
7-4 The EquationWriter