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

Correcting Mistakes with LAST XWrong One–Number Function

If you execute the wrong one–number function, use zŽto retrieve the number so you can execute the correct function. (Press †first if you want to clear the incorrect result, from the stack.)

Since {Pand {Sdon't cause the stack to drop, you can 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 ⋅ 105) and wanted to find its square root, but pressed *by mistake. You don't have to start over! To find the correct result, press zŽ<.

Mistakes with a Two–number operation

If you make a mistake with a two–number operation, ( ™, „, y, p,

0or .), you can correct it by using zŽand inverse of the two–number function ( „or ™, por y, .or 0).

1.Press z Ž to recover the second number (x just before the 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 zŽagain to 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 zŽto recover the second number, and execute the function again. (Press †first if you want to clear the incorrect result from the stack.)

Example:

The Automatic Memory Stack 2–9

File name 32sii-Manual-E-0424

 

Printed Date : 2003/4/24

Size : 17.7 x 25.2 cm