16 step-by-step examples, Introduction, Example 1 – HP 40gs User Manual
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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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