Integral 1) While changing x from a to b2) Multipliy f(x) by dx3) Sum all of 2)dx = ∆x = the amount of change in xx : change from x1 --> to x2 then, ∆x = x2-x1Definite Integral A NUMBER and represents the area under the curve f(x) from x=a to x=b.For example, Q. There is a function(Definite Integral) log x, how can get the all the area of log x(from 0 to x)? log x : A function that has been se..