Fx-7400g question

On Sat, 15 Jan 2000 10:03:59 -0700, r @eskimo.com (Bill

Hi Sheryl, hi Bill,

I don't have an casio fx-7400g.

I think you have the following Problem with this root:

first, you should write
x^-1 = 1/x
now it's easyer to see the problem

and maybe you will see that for x=0 y=1/0 is a problem

Could your calc plot this function? Yes, do it.
In the plot you will see something like that:

         y ^
           | :
           |  .
           |   ..
           |     .....
-----------+----------->
......     |           x
      ..   |
        .  |
         : |

x=0  y=infinite
x=+1 y=1
x=-1 y=-1
x->+infinite y=0
x->-infinite y=0
Your roots are in an infinite space :-)

I don't know if the casio was able to calculate limits?
In the plot you can see there
is  y=-infinite for x=0 left-limit
and y=+infinite for x=0 right-limit

regards,
Michael