Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
COMEDK2025MathematicsDifferential EquationsActual

The number of solutions of d y d x = y+1 x-1 , when y(1)=2 is

Options

  1. Aone
  2. Binfinite
  3. Ctwo
  4. Dzero

Correct answer

D. zero

Step-by-step solution

The given differential equation is a first-order linear separable differential equation: dy dx = y+1 x-1 . Separating the variables, we have dy y+1 = dx x-1 . Integrating both sides, we get |y+1| = |x-1| + C , which can be written as y+1 = k(x-1) where k is a constant. The initial condition is given as y(1) = 2 . Substituting x=1 and y=2 into the equation y+1 = k(x-1) , we get 2+1 = k(1-1) , which simplifies to 3 = k(0) . Since 3 = 0 is a contradiction, there is no value of k that satisfies the initial condition y(

Practice Differential Equations on Quantrex Academy →

More from Differential Equations

The general solution of the differential equation (x y x ) d y= (y y x -x ) d x is 2025The general solution of the differential equation (x+y) d y=d x is 2025If Ax ^3+ Bxy =4 (A and B are arbitrary constants) is the general solution of the differential equation F(x) d^2 y d x^2 +G(x) d y d x -2 y=0 , then F(1)+G(1)= 2025If y=A t^2+ B t (A,B are parameters) is general solution of the differential equation f(t) y^ (t)+g(t) y^ (t)+h(t) y=0 then 2 f(t)+t^2 h(t)= 2025The general solution of the differential equation (2 x-y)^2 d y-2(2 x-y)^2 d x-2 d x=0 is 2025The general solution of the differential equation x x d y=(x x-y) d x is 2025If a and b are arbitrary constants, then the differential equation corresponding to the family of curves y= (a x+b) is 2025The general solution of the differential equation x y(y+2) d y+ (y^3-1 ) d x=0 is 2025 Full Differential Equations list All COMEDK PYQs