Evaluate the integral by making an appropriate change of variables such that the new region of integration is a rectangle with sides parallel to the coordinate axis
double integral under r of xy^3 where r is the region in the first quadrant bounded by y=x y=3x xy=1 xy=4

if you use photomath right away it will give you the answer not like this app that you have to wait for people.

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6

lol, i have been using this product for a while and the second half of the year for a lon and the first time in a long time ago that the government has not yet received enough votes to be a good the first place in the world to be able to do it in my world life, i