How Do You Differentiate f(x) = (71+x)/(1-x)?

[AwesomeSN]

Homework Statement

Differentiate, f(x)=7^1+x/1-x

Homework Equations

The Attempt at a Solution

Working this out, hoping it's right as I was going along, my final answer is 7^1+x/1-x * (2ln7)/1-x

 

[lineintegral1]

Check your denominator...

Looks like you may have had a bit of a problem after you applied the chain rule. A great way to check your answers is to plug them in on www.wolframalpha.com. If you are incorrect, you can always ask us about the accuracy of your steps.

 

[Ray Vickson]

Homework Statement

Differentiate, f(x)=7^1+x/1-x

Homework Equations

The Attempt at a Solution

Working this out, hoping it's right as I was going along, my final answer is 7^1+x/1-x * (2ln7)/1-x

Please learn to typeset expressions properly; in particular, USE PARENTHESES. Your function is f(x) = 7^(1+x)/(1-x). What you wrote actually means 7^{1 + (x/1) -x} = 7.

RGV