i keep gettinng the error 17 invalid when i try to graph.
anybody has an idea what to do!?
ti 86 has a lot of errors
i would never buy them or sugget anyone to buy them ;)
You're trying to reference a variable or use a function where it is invalid. If you're still struggling with this, post a little more detail as to exactly what you're trying to plot.
Posted on Jan 19, 2010
Hi there,
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Posted on Jan 02, 2017
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