Correcting Mistakes With Last X - HP 32SII Owner's Manual

See appendix B for a comprehensive list of the functions that save x in the
LAST X register.

Correcting Mistakes with LAST X

On
Wrong e–Number Function
If you execute the wrong one–number function, use
the number so you can execute the correct function. (Press
want to clear the incorrect result, from the stack.)
Since
recover from these functions in the same manner as from one–number
functions.
Example:
Suppose that you had just computed In 4.7839 × (3.879 × 10
to find its square root, but pressed
over! To find the correct result, press
Mistakes with a Two–number operation
If you make a mistake with a two–number operation, (
or ), you can correct it by using
two–number function (
1. Press
operation).
2. Execute the inverse operation. This returns the number that was originally
first. The second number is still in the LAST X register. Then:
If you had used the wrong function, press
restore the original stack contents. Now execute the correct function.
If you had used the wrong second number, key in the correct one and
execute the function.
If you had used the wrong first number, key in the correct first number, press
to recover the second number, and execute the function again.
(Press first if you want to clear the incorrect result from the stack.)
Example:
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24
and don't cause the stack to drop, you can
or ,
to recover the second number (x just before the
Size : 17 .7 x 25.2 cm
by mistake. You don't have to start
.
or , or
The Automatic Memory Stack
to retrieve
first if you
5
) and wanted
, , , ,
and inverse of the
).
again to
2–9