The problem asks to find the critical numbers forg(t)=[sqrt(t)]*(1-t).

So you have to find g'(t) for the critical numbers. Thefirst thing I did was g'(t)=sqrt(t)(-1)+(1/2(t)^-1/2)1-t because ofthe chain rule. Everyone else getsg'(t)=[(1-t)/(2sqrt(t)]*-1. How is it that I am wrong, andhow did they get that answer?

## Answers ( 3 )