1. The problem statement, all variables and given/known data [PLAIN]http://webwork2.asu.edu/webwork2_files/tmp/equations/9f/ab106661843d52ded597f9bcb68ace1.png [Broken] find f'(x) 2. Relevant equations 3. The attempt at a solution I tried 8x^.5(-4), 0, and a few others once my original try came up with nothing. I realize sqrtx should come out as .5x^-.5, x should be 1 but i'm not sure how to use the 16 and -5 for sure. I tried a couple others deeper into the assignment and ran into the same problems 1. The problem statement, all variables and given/known data [PLAIN]http://webwork2.asu.edu/webwork2_files/tmp/equations/af/00b3090b142ffad24c374c5457d8701.png [Broken] 2. Relevant equations 3. The attempt at a solution This one i got (12x+12)/(.5x^-.5) which is wrong also. In addition to helping me with those problems and simple rules that i'm forgetting would be great help. I know i must be missing something amazingly simple. On a side note this is online work that doesn't require you to simplify so I know its not going to be that. Thanks!