HP 49g+ User Manual page 812

Graphing calculator

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We can also follow the evaluation of the expression starting from the 4 in the

argument of the SIN function in the denominator. Press the down arrow key

˜, continuously, until the clear, editing cursor is triggered around the y,

once more. Then, press the right arrow key until these cursor is over the 4 in

the denominator. Then, press the upper-arrow key —to select this 4. The

steps in the evaluation of the expression, starting from this point, are shown

Step B4 = Step A5

Step B5 = Step A6