/sci/ - Science & Math

>>15877998
With the integral method, you get the area under the curve L(t) from 0 to 2. With the L(0)+L(1) method, you get a lower approximation of that area, because you're basically assuming that the function is constant from 0 to 1 and has the value L(0). But it is rising, so this approximation misses that extra area. The integral is basically defined as adding an infinite number of rectangles, in your example, you're adding only 2.