Page 61 - Mathematics of Business and Finance

Chapter 1 | Review of Basic Arithmetic 41

Solution (i) 16 4 (ii) 5 –4
Enter 16 Enter 5

Press the exponent key Press the exponent key
Enter the exponent value 4 Enter the exponent value as 4
followed by the plus/minus key
Press the equal key
Press the equal key

(iii) (1.04) – 1 (iv) 1 – (1.005) –4
4

Enter 1.04 Enter 1.005
Press the
Press the exponent key
exponent key
Enter the exponent value as 4
Enter the exponent value 4
followed by the plus/minus key
Press the subtraction key Press the equal key
Press the plus/minus key to
Enter 1 make the result negative
Press the addition key
Press the equal key Enter 1
Press the equal key

Example 1.4(d) Using the Store and Recall Functions to Solve Order of Operation Problems
R S 0.05 36 R S R S 0.03 –12 R S
S
(i) 1380S S S S 1+ 12 X –1 S S S (ii) 2000S S S 1– 1+ 4 X S S S
S S S S 0.05 X S S S S S S S 0.03 X S S S
T 12 T T 4 T

Solution R S S S 1+ 0.05 X –1 S R S R –12 R
36
12
S
4
(i) 1380S S S S S S 0.05 X S S S S S (ii) 2000S S S S S 1– 1+ 0.03 X S S S S S
0.03
T 12 T S S S 4 X S S
T T