Q.4 the nonzero value of n for which the differential equation (3ry+ny)dr + (nr"+3r°y)dy =0 becomes exact is 1. -3 2.3 3. -2 4. 2 using the value of n, obtain t

Q.4 The nonzero value of n for which the differential equation (3ry+ny)dr + (nr"+3r°y)dy =0 becomes exact is 1. -3 2.3 3. -2 4. 2 Using the value of n, obtain the solution of given differential equation. Q.5 An integrating factor of the differential equation 1. 2. log 3.3 4. log 2 Using this integrating factor, obtain the solution of given different ial equation.