How to plotting symbolic solution over range?
    4 views (last 30 days)
  
       Show older comments
    
syms y(x)
ode = x * diff(y, x) == (50) * x * diff(y, x, 2) - (40.3) * x + (101); % DE shown above.
x_dot = dsolve(ode);
plot(195, x_dot)
The value (101) changes with frequency, but I've simplified the equation for minimalism.
I'm trying to plot x_dot vs frequency, but I get:
>> Input must be a function or functions of a single variable.
How can I plot this?
1 Comment
  KSSV
      
      
 on 15 Jun 2020
				x_dot will be a symbolic expression with x and has two constants C1, C2. You cannot plot using plot. 
Answers (1)
  Ameer Hamza
      
      
 on 15 Jun 2020
        
      Edited: Ameer Hamza
      
      
 on 15 Jun 2020
  
      There is a mistake in the writing of the equations. Also, you need to specify initial conditions to solve for the constant of integrations. Try following code
syms y(x)
dy = diff(y, x, 1);
dy2 = diff(y, x, 2);
ode = dy == (50) * dy2 - (40.3) * x + (101); % DE shown above.
ic = [y(0)==1, dy(0)==0]; % initial conditions
y_sol(x) = dsolve(ode, ic);
fplot(y_sol, [0 10])

0 Comments
See Also
Categories
				Find more on Calculus in Help Center and File Exchange
			
	Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!