
Re: 1.94  What math PhDs say about limit theory in calculus.
Posted:
Jul 11, 2014 1:45 AM


On Thursday, July 10, 2014 9:04:26 PM UTC+2, Dan Christensen wrote: > On Thursday, July 10, 2014 1:50:45 PM UTC4, John Gabriel wrote: > > > 1. If f(x)=x, then f'(0)=1. > > > > > > > > > > > > TRUE > > > > > > > > > > > > 2. If f(x)=x^3, then f'(0)=0. > > > > > > > > > > > > FALSE, because there is no tangent line at x=0. It does not matter that you obtain f'(0)=0 by plugging 0 into 3x^2. > > > > > > > There is a tangent line at x=0, just like there is one for f(x)=x. > > > > I really think you will have to join Prof. Ullrich's remedial class.
Hey stupid, if f(x)=(x1)^(1/3) + 2 is the position function, then what is the speed at x = 1?

