The Expert: Examples For Solve - HP 39gs Master Manual
Graphing calculator
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Also See for 39gs:
- User manual (314 pages) ,
- Quick start manual (76 pages) ,
- Instruction manual (5 pages)
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Easy problems
Have you ever thought "There has to be an easier way!" when confronted in a test with something like:
(
)
x −1
− = −
1
3
If you're sure there is only one answer to a problem, as there is in this case, then solving it is simply a matter
of entering the equation into the
Harder problems
When you know or suspect that there is going to be more than one
solution to a problem then the
estimates.
For example:
When you plot this you can see that the solutions are near -2 and 1
If we now switch to the
This will give solutions of -2
In this case the problem shown will graph easily on the default
case. You may need to adjust the axes in
surd, or on showing all working, but even in that case you'll at least be able to check your answer.
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(
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3 − x
2
9
4
view and solving it.
SYMB
view can help you to obtain
PLOT
(
)
x +1
2
=
x
2
view we can use these as initial guesses.
NUM
.
56 and 1
.
56.
PLOT SETUP
S
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V
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V
E
5.
.
view but this will not always be the
PLOT
. Your teacher may insist on an answer given as a
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