what is the error is here?

I have been computing a solution of second order linear ODE but at final answers shows the d solve error?

why it happen? i have enter right program then also shows error?

Here attach with Screenshot.

Answer 1

[Harshavardhan]

Hi @Jignashu Gohel

The error/warning has occurred as “dsolve” was unable to find a symbolic solution for the given differential equation.

As a workaround, a numerical solution can be obtained by using “ode45”. Here is an example code to solve the equation numerically for .

% Define the system as first-order equations
% Let y1 = y, y2 = y'
% Then, y1' = y2, y2' = -y1

f = @(t, Y) [Y(2); -Y(1)];

% Initial conditions
Y0 = [1; 0];  % y(0) = 1, y'(0) = 0

% Time span
tspan = [0 10];

% Solve using ode45
[t, Y] = ode45(f, tspan, Y0);

For more information on “dsolve” and ”ode45” you can type the following commands in a MATLAB command window.

doc dsolve
doc ode45

Hope this helps.