4 replies to this topic

[Kashio]

I have an fx-9750G Plus. When graphing I often incur the error "Not found" when I try to compute the x-intercept. The method I use is G-Solv -->(x-cal)-->Y=0.

Example Problem: Y1:28000-0.08X

I've attempted to zoom out so that both intercepts are in the window (which I felt I shouldn't have to do for it to calculate this). I still received the "Not Found" message.

Thanks for any help!

[DarkDead]

Hi.

I tried it in my 9860. When using a small window it didn't found the intersection. But when I used an window with:
Xmin: -1x10^6 Ymin: -1x10^6
Xmax: 1x10^6 Ymax: 1x10^6

it gave me the intersection. But as you said I felt I shouldn't have to use this window.

[Kashio]

Also, if anyone is able to compare the result of this function on the fx-9750G/9860 with the TI-83/84 please post the results.

Thanks

[kucalc]

Well basically, the x-intercepts of a quadratic function are it's roots. Just use the ROOT feature on the fx-9750g to find the x-intercepts.