Exams › JEE Advanced › Maths
Solve the differential equation d³y/dx³ - 6 d²y/dx² + 11 dy/dx - 6y = 0.
- y = (c1 + c2*x + c3*x²)e^x
- y = x(c1*e^x + c2*e^(2x) + c3*e^(3x))
- y = c1*e^x + c2*e^(2x) + c3*e^(3x)
- none of these
Correct answer: y = c1*e^x + c2*e^(2x) + c3*e^(3x)
Solution
The characteristic equation has distinct roots m = 1, 2, 3, so the general solution is a combination of e^x, e^(2x), e^(3x).
Related JEE Advanced Maths questions
- Consider the differential equation associated with y = Σ (from i=1 to 3) C_i e^(m_i x), where C_i represents arbitrary constants and m₁, m₂, m₃ are the solutions of m³ - 7m + 6 = 0. If the equation is expressed as d³y/dx³ - 7 dy/dx + k y = 0, determine the value of k.
- Determine the order of the highest derivative raised to a power in the equation: (dy/dx)⁴ - 2x (d³y/dx³)² x² d²y/dx² d³y/dx³.
- The provided differential equation is expressed as a polynomial involving derivatives such as d²y/dx² and d³y/dx³. Among these, d³y/dx³ is the derivative of the highest order, and its greatest power in the equation is 2. What is the degree of this differential equation?
- When solving the differential equation d²y/dx² = 6x - 4, the integration gives dy/dx = 3x² - 4x + A. If dy/dx becomes zero at x = 1, what is the value of A?
- A curve passes through the point (1, π/6). Let the slope of the curve at each point (x, y) be y/x + sec(y/x), x > 0. Then the equation of the curve is -
- Consider y(x) as a solution to the differential equation (1 + e^x) dy/dx + y e^x = 1, with the initial condition y(0) = 2. Which of the following assertions is/are accurate?
⚔️ Practice JEE Advanced Maths free + battle 1v1 →