HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 275
Step-by-Step Examples
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hp40g+.book Page 1 Friday, December 9, 2005 1:03 AM 16 Step-by-Step Examples Introduction Example 1 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. If A is: 3-- - 1 -2----------1-- + 1 2 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 above). to select the denominator (as shown Press to simplify the denominator. Now select the numerator by pressing . Step-by-Step Examples 16-1
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
+
------------
hp40g+.book
Page 1
Friday, December 9, 2005
1:03 AM