I need some practice problems involving double integrals

[Eclair_de_XII]

I'm in my Probabilistic Models in Biology class, and the professor just brought up the subject of double integrals. I haven't done Calculus IV since fall of 2016, so naturally, I kind of forgot how to do integrals with more than one integrand. Can anyone recommend me any (hopefully, free) pdf's or resources that contain such practice problems? Double integrals are being emphasized in this class right now, so if anyone could link me to a resource with problems of this caliber, it would be much appreciated.

 

[mr.tea]

I'm in my Probabilistic Models in Biology class, and the professor just brought up the subject of double integrals. I haven't done Calculus IV since fall of 2016, so naturally, I kind of forgot how to do integrals with more than one integrand. Can anyone recommend me any (hopefully, free) pdf's or resources that contain such practice problems? Double integrals are being emphasized in this class right now, so if anyone could link me to a resource with problems of this caliber, it would be much appreciated.

You can take a look at https://mathinsight.org/thread/multivar for explanation and http://tutorial.math.lamar.edu/Problems/CalcIII/DIGeneralRegion.aspx and https://faculty.math.illinois.edu/~hildebr/461/doubleintegrals-sol.pdf for practice problems, and every multivariable/vector/advanced calculus can do the work.
Good luck.