How do you solve differential equation by MATLAB?

Answer 1

At first, you have used a command for variable a function. Example as....

f(x)=x^4+5*x-7

(i) To differentiate the equation

(ii) n derivative of the equation

SOLUTION:

(i)

MATLAB CODE:

syms x

f=inline('x^4+5*x-7','x')%f=inline('function','variable')

diff(f(x))

the above code will write in M-file and run, then you will get Answer.

OR

BY USING COMMAND WINDOW:

>> syms x

>> f=inline('x^4+5*x-7','x')

f =

Inline function:

f(x) = x^4+5*x-7

>> diff(f(x))

ans =

4*x^3 + 5

(ii)

solution

diff(function,n)% here diff is command

>> syms x

>> diff(x^4+5*x-7,3)

ans =

24*x