Question

How do I solve `f(x)=(2x)/(x^2-4)` on a TI-83?

Answer 1

Like I said in my [other explanation](http://socratic.org/questions/how-do-i-graph-f-x-2x-5-x-1-on-a-ti-84`111848), you can find zeroes by simply typing your equation into your`y=# button, and using your 2nd->Calc->Zero function to find the zeroes (for this equation your zero is 0).

Also keep in mind that you do not need to type out the whole equation into your calculator. You just need to type the numerator of your function, since the denominator has no effect on what the zeroes will be (see my previous explanation to know why).

Hope that helped :)