Mathematical Handbook of Formulas and Tables by John Liu, Murray R. Spiegel (1998, Paperback, Subsequent Edition)

I requested and paid for 5 copies of the book. First of all I was told the 5 copies were not really available and that only 3 could be sent. Thank God I received the refund for the other 2 after a while. The most annoying thing was that I received only 2 of the 3 copies I requested. The last copy or my money I never got back. I never expected this from e-bay.
I hope something could be done about it.

Thank you.

Felix

it was recommended for my physics class. it's a very useful book for physics majors and probably math majors too.

This is a great book if you are an engineer (especially an engineering student) who deals with problems that involve sophisticated math equations. This book provides solutions to many complicated equations so that you don't have to spend hours solving them. That means you can focus less on the math and more on the engineering, which is something engineers like to hear...