Which of the following functions is NOT uniformly continuous on (0,1)(0, 1)(0,1)?
f(x)=x2f(x) = x^2f(x)=x2
f(x)=sin(1/x)f(x) = \sin(1/x)f(x)=sin(1/x)
f(x)=xf(x) = \sqrt{x}f(x)=x
f(x)=xsinxf(x) = x \sin xf(x)=xsinx