Author Topic: Confused about a MAV questions (Read 638 times) Tweet Share

chickenpop · « **on:** November 07, 2010, 02:15:42 pm »

I used det to find a< (1/4), hence chose C, but the answer was E. Can anybody help explain why 0 isn't part of 'a'?

Elnino_Gerrard · « **Reply #1 on:** November 07, 2010, 02:17:07 pm »

I says in the q a is a non zero constant

stonecold · « **Reply #2 on:** November 07, 2010, 02:19:52 pm »

let them equal to each other, then times through by x

rearrange to get into quadratic form. The find the value of a for discriminant >0

chickenpop · « **Reply #3 on:** November 07, 2010, 02:27:29 pm »

ahh, I did not see that lol

stonecold · « **Reply #4 on:** November 07, 2010, 02:29:15 pm »

oh sorry. yeah it cant be 0 anyway.

y=0 only intersects once...

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