Posted by Kate on .
ok so i'm kinda sort of confused...
I had this for a equation
X^2 + 4X  1 = 0
and then I was like zero???
zero... really zero...
hmm...
X^2 + 4X  1 = dy
????????
That zero does represent when Y equals zero correct??? this allows us to solve for X
OH!!!!!!!!!!!!!!
wait so I'm confused...
help me....
I'm not solving for X really am I... I actually solving for the derrivative of y??? when y approaches infinitely small or other words zero???
I'm confused can you clear this up for me

Math 
Marth,
Context would help. What is the original problem?