a couple of tough (to me) questions

[dans]

I need to prove the chain rule in this problem.

Let k(x)=f(g(x)), then use the limit definition of the derivative to find k'(x).
Also, you must use the property that for small h, k(x+h)=k(x)h.


How do I state the formula for the circumference of a circle as a function of the radius?
a. c(r)=
b. dc/dr=

I'm sort of stumped.

 

[soroban]

Hello, dans!

How do I state the formula for the circumference of a circle as a function of the radius?

How about just <u>writing</u> the formula for the circumference of a circle?

. . . Circumference . = . 2 x pi x Radius

 

[dans]

I need to prove the chain rule in this problem.

Let k(x)=f(g(x)), then use the limit definition of the derivative to find k'(x).
Also, you must use the property that for small h, k(x+h)=k(x)h.


How do I state the formula for the circumference of a circle as a function of the radius?
a. c(r)=
b. dc/dr=

I'm sort of stumped.

I guess this stumped everyone else too.