Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
Solve[D[0.6*Log[1+0.42174*x]+0.4*Log[1-0.272*x],x]==0,x]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random
