Casio FX-991W - Logarithmic and Exponential Functions; Logarithm Operations; Roots, Powers, and Factorials

Basic Calculations
• Use the COMP mode for basic calculations.
• Example 1: 3x(5x 10"' i! )
3 O CO 5 © -S 9 CO m I ' 1 r- 1
• Example 2: 5x(9+7)
5 O CD9 El 7LOO | 80. [
• You can skip all CD operations before O
Memory Calculations
M Independent Memory
• Values can be input directly into memory, added to
memory, or subtracted from memory, independent
memory is convenient for calculating cumulative totals.
• Independent memory uses the same memory area as
variable M.
• To clear independent memory (M), input GD f!E [.Ml
• Example;
: ■ 23 + 9-32 23 D 9 @1 CD | 32. ' |
-) 45 x 2 — 90 . ,53 0 S iH±) |_ 47. |
(Total) -11 450 2SOB | 90. |
• [mi CD I". . . -11. 1
a Variables
* There are nine variables (Athrough F. M, X and Y). which
can be used to store data, constants, results, and other
values.
* Use the following operation to delete data assigned to all
nine variables: @ S O .
* Use the following operation to delete data assigned to a
particular variable; QD HE CD. This operation deletes the
data assigned to variable A.
• 11 *