
Patrick B. answered 07/21/19
Math and computer tutor/teacher
y = (x-2)/x = 1 - 2*x^(-1)
the integral is x - 2*ln|x|
x=4: 4 - 2*ln|4| = 4 - 2*ln|2*2| = 4 - 2*( ln|2|+ln|2) = 4 - 2*2ln|2| = 4 - 4*ln|2|
x=2: 2 - 2*ln|2|
4-4*ln|2| - 2+ 2*ln|2| = 2 - 2*ln|2| which is approximately 0.61705+
As a sanity check, the region is ABOUT the same as the right triangle with
base 4-2=2 and height 0.5. THe area is then (1/2)(2)*0.5 = 0.5