Please help me on this calculus question.

002 10.0 points Hint: Differentiate both sides BEFORE doing anything else. It is much harder if you solve for p as your first step. When a certain polyatomic gas undergoes adiabatic expansion, its pressure p and vol- ume v satisfy the equation pull3 = k; where k is a constant. Find dp dt dp 1.3p du 1. dt U dt dp p du 2. it v dt dp 3. =-1.3pu dt dt dp du 4. = dt pv dt dp du 5. = 1.3pv dt dt dp 6. = -PU dt dt dp 1.3p du 7. = dt dt dp 8. p du dt v dt 9. None of these