Question

why can’t you use the chain rule to differentiate x/(x^2+1)?

Answer 1

You can. What is chain rule btw?

Answer 2

(f(x)g(x))' = f'(x)g(x) + g'(x)f(x)? is this the chain rule

Answer 3

d/dx f(g(x))=f'(g(x))*g'(x)

Answer 4

There is no chain there.

Answer 5

f(x)/g(x)

Answer 6

Oh, so that's the chain rule. Why would you use chain rule here then?

Answer 7

That's a rhetorical question.

Answer 8

you could techinically chain it, but you'd have to multiply too, when it's just easier to only divide

Answer 9

You can use Chain Rule on any problem anywhere in the world. (Well almost. And if the solution doesn't turn out a fifty pages long one).

Answer 10

By the way, using the quotient rule would be way easy here.

Answer 11

I was thinking the inside function was u=x^2+1, and the outside function would be x/u
but it has that extra x in there I don't know what to do with

Answer 12

ya u can use quotient rule.............

Answer 13

YOU DON'T SAY!?!

Answer 14

you could use u sub if it was in an integral

Answer 15

write \[x/(x^2+1)\] as \[x\cdot(x^2+1)^{-1}\] then you can use the chain rule (along with the product rule)