Some help on this following question, please. Thanks a bunch!
Question: If is Riemann integrable on and continuous at , prove that is differentiable at and . Show that if has a jump discontinuity at , then is not differentiable at .
Some help on this following question, please. Thanks a bunch!
Question: If is Riemann integrable on and continuous at , prove that is differentiable at and . Show that if has a jump discontinuity at , then is not differentiable at .