Re: Reversing a graph function (TI-83)
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Re: Reversing a graph function (TI-83)
Say you have some graph. You want to find its roots, its X-intercepts (often
there are more than one). You set f(x)=0 and solve. Okay. Say you have some
graph, and you want to find at what Xes it equals some Q. So, f(x)=Q. So
f(x)-Q=0. Solve. Boring. Again, there often will be many solutions, unless you
have a one-to-one function.
Instead of letting your calculator think for you, how about letting YOU think
for you? This is basic functions. You shouldn't have anything higher than a
TI-30. Only use your calculator to speed up stuff you COULD do by hand but
don't want to take the time to.
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