HP 48gII - Manual (Page 68)

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• Press „˜ to activate the line editor once more. The result is now:
• Pressing ` once more to return to normal display.
To see the entire expression in the screen, we can change the option
_Small Stack Disp in the DISPLAY MODES input form (see Chapter 1).
After effecting this change, the display will look as follows:
Note: To use Greek letters and other characters in algebraic expressions use
the CHARS menu. This menu is activated by the keystroke
combination
…±. Details are presented in Appendix D.
Using the Equation Writer (EQW) to create expressions
The equation writer is an extremely powerful tool that not only let you enter or
see an equation, but also allows you to modify and work/apply functions on
all or part of the equation. The equation writer (EQW), therefore, allows you
to perform complex mathematical operations, directly, or in a step-by-step
mode, as you would do on paper when solving, for example, calculus
problems.