# Thread: differential calculus-any help appreciated

1. ## differential calculus-any help appreciated

find expressions for dy/du, and du/dx, then use the chain rule to find dy/du in terms of x.
y=e^5u u=x^3 + 1

1. dy/du= 2. du/dx= 3.dy/dx=

two others:

4. find dy/dt
y=6e^2tln(squareroot3t)

5. Dxf(x)
f(x)=x^2 +2/x-1

2. Originally Posted by jman
find expressions for dy/du, and du/dx, then use the chain rule to find dy/du in terms of x.
y=e^5u u=x^3 + 1

1. dy/du= 2. du/dx= 3.dy/dx=
see attachment below

two others:

4. find dy/dt
y=6e^2tln(squareroot3t)
see attachment below

5. Dxf(x)
f(x)=x^2 +2/x-1
what does Dxf(x) mean?

3. Originally Posted by jman

5. Dxf(x)
f(x)=x^2 +2/x-1
do you mean f(x)=x^2 +2/(x-1)

or

f(x)=x^2 +(2/x)-1

??

use parenthesis please

4. sorry i meant to have it say: find Dxf(x)= (x^2 +2)/ (x-1)

5. Originally Posted by jman
sorry i meant to have it say: find Dxf(x)= (x^2 +2)/ (x-1)
and the Dx just means the derivative with respect to x? i see that notation all over the place, i need to know what it means here

6. ok, since i'm getting no response, i'll assume that you mean the derivative with respect to x when you say Dx, so here

7. sorry i stepped away from the computer but yes thats what i meant by it. thanks for the help i appreciate it.