Technologies Humanware Inc. APBT320 Manuale Utente

8-213 

 

8.6.3 

Decimal Exponent. 

Very large or very small numbers are often expressed in scientific notation as a power of 10. For 
example, the number 4000 is equal to 4 x 1000, which may be written as 4 x 10 to the power of 3. 
This number could be entered into a calculation by pressing:  

4 ^ 3, that is, 

Similarly, the number 0.05 could be entered by pressing  

5 ^ N2, 

that is, 5 followed by SHIFT 6, followed by N, followed by 2. 

 

 

8.6.4 

Powers and Roots. 

These functions are assigned as follows 

 

x to the power of y:  Press X 

  

x to the power of 1/y:  Press SHIFT with X 

For example, to calculate 3 to the power of 4, press: 3 X 4 

followed by ENTER. The result 

"81" is displayed. 

Parentheses can be used where y is a compound expression. For example, to calculate 2 to the 
power of 6 + 8, press: 2 X (6 + 8) 

followed by ENTER. The result 

"16,384" is displayed. 

To calculate the cube root of 27, press: 2 7 SHIFT with X 3 

followed by ENTER. The result 

"3" is displayed. 

 

 

8.6.5 

Logarithmic Functions. 

The following logarithmic functions are provided: 

 

Log base e: 

press E; 

 

e to the power of: 

press SHIFT with E; 

 

Log base 10:  press T; 

 

10 to the power of: 

press SHIFT with T. 

For example, to calculate the log base e of 10 and save the result in Memory 2, press: 

 

E 1 0 S 2