Question 7 Solve the differential equation. dy da = xy 10 pts O y= 2 -+C O y = 16 -+ C O Ca2 16 + 2 + 02 O 16 +C10 pts Question 8 dL = kL' Int that satisfies the initial condition L(1) = -1. Find the solution of the differential equation - dt O L = 1 - k - ktint + kt 1 O L = 1- k-ktint + kt 1 O L= -1-kint 1 OL= 1 - kintQuestion 9 10 pts Solve the differential equation ay' = y + xe / by making the change of variable v = Oy= -xin C -Inx]| Oy= -xIn(In|x)) + C Oy = z 272 + ev/x Oy= -xinz + C|