If XXX has CDF F(x)=x10F(x) = \frac{x}{10}F(x)=10x for 0≤x≤100 \leq x \leq 100≤x≤10, what is f(x)f(x)f(x)?
f(x)=110f(x) = \frac{1}{10}f(x)=101
f(x)=x10f(x) = \frac{x}{10}f(x)=10x
f(x)=xf(x) = xf(x)=x
f(x)=10f(x) = 10f(x)=10