Hi
For problem 1H-5, 18.01 Exercises, I can't understand how u^2=((y+1)/y-1))=e^2x. When I solve for 'u' I keep getting the answer: x=ln2-ln(y-1). Any help will greatly be appreciated.

Thanks,
John

Question

Hi 
For problem 1H-5, 18.01 Exercises, I can't understand how u^2=((y+1)/y-1))=e^2x.  When I solve for 'u' I keep getting the answer: x=ln2-ln(y-1).  Any help will greatly be appreciated.

Thanks,
John

anonymous · Answer

This problem was in the Worked examples in session 17 in unit 1b. The solutins link is below. If the link doesn't work just go there and check it out. Hope this helps http://ocw.mit.edu/courses/mathematics/18-01sc-single-variable-calculus-fall-2010/part-b-implicit-differentiation-and-inverse-functions/session-17-the-exponential-function-its-derivative-and-its-inverse/MIT18_01SCF10_ex17sol.pdf

anonymous · Answer

It's Problem #4 there.