State the order of the given ordinary differential equation. Determine whether the equation is linear or nonlinear. xd3ydx3−(dydx)4+y=0x dx 3d 3y−( dxdy) 4 +y=0

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0