HP Prime Graphing Wireless Calculator Uživatelský manuál Strana 89

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Sample calculations
The general philosophy behind RPN is that arguments are placed before operators. The arguments can be on
the entry line (each separated by a space) or they can be in history. For example, to multiply π by 3, you could
enter the following on the entry line:
3
Then, enter the operator ( ). Thus, your entry line would look like this before entering the operator:
However, you could also have entered the arguments separately and then, with a blank entry line, entered the
operator ( ). Your history would look like the following gure before entering the operator:
To get the same result, you could also press to enter the value π on stack
level one, and then press .
If there are no entries in history and you enter an operator or function, an error message appears. An error
message will also appear if there is an entry on a stack level that an operator needs but it is not an
Sample calculations 41
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