Just for clarification below is the question again (d^2 y)/(dx^2 )+4dy/dx+3y=0 subject to initial condition where dy/dx=4 and y=4. Can you help me explain how this can be solved?

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Joshua Amuga
Joshua Amuga el 2 de Nov. de 2016
Comentada: Walter Roberson el 5 de Nov. de 2016
Just for clarification below is the question again
(d^2 y)/(dx^2 )+4dy/dx+3y=0 subject to initial condition where dy/dx=4 and y=4.
Can you help me explain how this can be solved?
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Walter Roberson
Walter Roberson el 5 de Nov. de 2016
Editada: Walter Roberson el 5 de Nov. de 2016
Joshua Amuga comments to KSSV:
IVP :=ode({y''(x)+4*y'(x)+3*y,y(0)=3,y'(0)=4},y(x));
Undefined function or variable 'IVP'.
Walter Roberson
Walter Roberson el 5 de Nov. de 2016
Joshua Amuga: you have attempted to use MuPAD syntax in MATLAB. You need to command
nb
and then use the command in the MuPAD notebook that opens.

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Walter Roberson
Walter Roberson el 2 de Nov. de 2016
dsolve() or one of the ode* routines.
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Joshua Amuga
Joshua Amuga el 2 de Nov. de 2016
Editada: Walter Roberson el 5 de Nov. de 2016
ode({y''(x)+4*y'(x)+3*y,y(0)=3,y'(0)=4},y(x));
i keep getting an error. Can you help me write the code
Walter Roberson
Walter Roberson el 5 de Nov. de 2016
You are attempting to use MuPAD syntax in MATLAB. The solution you posted of
dsolve('D2y-4*Dy+3*y','y(0)=3','Dy(0)=4')
appears to me to be valid.

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