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How To Clear The Stack - HP 35s User Manual

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Filling the stack with a constant
The replicating effect of
(from T into Z) allows you to fill the stack with a numeric constant for calculations.
Example:
Given bacterial culture with a constant growth rate of 50% per day, how large
would a population of 100 be at the end of 3 days?
T
Z

Y
X
1
1. Fills the stack with the growth rate.
2. Keys in the initial population.
3. Calculates the population after 1 day.
4. Calculates the population after 2 days.
5. Calculates the population after 3 days.

How to Clear the Stack

Clearing the X–register puts a zero in the X–register. The next number you key in (or
recall) writes over this zero.
There are four ways to clear the contents of the X–register, that is, to clear x:
1. Press
2. Press
3. Press
4. Press
For example, if you intended to enter 1 and 3 but mistakenly entered 1 and 2, this
is what you should do to correct your error:
together with the replicating effect of stack drop
1.5
1.5
1.5
1.5
1.5
1.5
1.5
100
2
() (Mainly used during program entry.)
() to clear the X-, Y-, Z-, and T-registers to zero.
Replicates T – register
1.5
1.5
1.5
150
3
RPN: The Automatic Memory Stack
1.5
1.5
1.5
225
4
5
1.5
1.5
1.5
337.5
2-7

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