HP 40gs - 16 Step-By-Step Examples; Introduction

Step-by-Step Examples 16-1
16
Step-by-Step Examples
Introduction
This chapter illustrates the power of CAS, and the
Equation Writer, by working though a number of
examples. Some of these examples are variations on
questions from senior math examination papers.
The examples are given in order of increasing difficulty.
Example 1 If A is:
calculate the result of A in the form of an irreducible
fraction, showing each step of the calculation.
Solution: In the Equation
Writer, enter A by typing:
3 2 1
1 2
1
Now press to select the denominator (as shown
above).
Press to simplify the
denominator.
Now select the numerator
by pressing .
3
2
---
1–
1
2
---
1+
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