Hi. I was taking a practice test for a Math Contest and I can not figure out what the answer to one question is. Here is the question:
The function has roots (i.e. ). Find .
E. None of these.
Correct answer: B
I used the zeros function on the TI 89, and it said that the only zero of the function was -8.65..., so I put E, but I don't see why this is wrong. Could someone explain this question to me? Thanks!