Question

Find the derivative of

-(1)/(20000)x^2

Answer 1

you can rewrite it as -(20000x^2)^(-1)
then do power rule + chain
so derivative = -(-1)(20000x^2)^(-2) * (20000(2x))
then simplify

Answer 2

Is the answer -0.0001?

Answer 3

??? I think there is still supposed to be an x in there

Answer 4

opps forgot the x

Answer 5

negatives cancel out?

Answer 6

and it is 0.0001 (x/x^4) = 0.0001(x^-3)

Answer 7

ahh ok I see now.

Answer 8

oh wait... does the x start on the top or bottom?

Answer 9

\[-\frac{ 1 }{ 20000 }x^2\]

Answer 10

sorry, I had did it as on the bottom
here is the correct wolfram alpha answer
http://www.wolframalpha.com/input/?i=derivative+of+-%281%29%2F%2820000%29x%5E2+

Answer 11

ahh ok in the computer they have it written as -0.0001x I was wondering how did they get that. from \[-\frac{ x }{ 10000 }\]

Answer 12

nvm got it now hehe thanks