Question

How do you estimate a definite integral?

Answer 1

plugging in the upper and lower limits

Answer 2

Well that's evaluating it. You use numerical methods like reimann sums to approximate. Trapezoidal methods and simpsons etc.

Answer 3

So how would you go about estimating a definite integral if you're told you have to use left endpoints and a certain amount of subintervals?

Answer 4

trapezoidal or simpsons. Have a look at videos by PatrickJMT on youtube