Usually as soon as you start entering an expression in the Y= editor
screen, the = sign is highlighted to ensure the drawing of a function.
However, if you have previously used the
Transfm application to draw
dynamic graphs, it takes over the graphing functionalities from the
native OS and you can only draw a single graph.
You can skip the next paragraph if you wantThe reason is that
dynamic graphing needs one or two parameters that can be changed during
the graphing process and the graph redrawn with a new value of a
parameter, and you end up with a family of curves differing one from
the other by the values of one parameters. But since the calculator has
space for 10 graphs at most, only one function can be highlighted.
To
make a long story short, you must uninstall the Transfrm application
from memory. The procedure will not erase it, just kick it out of
memory.
Press the [Apps] key. Scroll down or up to reach the
Transfm application. Select it and press [ENTER]. If that application
was running you will see a new screen that tells you
Transfrm App
- Uninstall
- Continue
Press1:Uninstall.
Graphing functionalities will revert to the native OS
Another
potential culprit is the Inequalz App. To uninstall it, do as for the
Transfm and select the option that will unload it from memory.
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