how to find total derivative?
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i want to find total derivative in MATLAB eq== cos(x) = sin(y)*x the solution should be like this -sin(x) = x*cos(y)*dy/dx + sin(y)
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Accepted Answer
Adam Barber
on 16 Oct 2015
Hey Kanav,
Check out "diff" in the Symbolic Math Toolbox. One thing to note is that for the form you want, you need to explicitly define y as a function of x.
syms x y(x)
diff(cos(x) - sin(y)*x,x)
returns
- sin(y(x)) - sin(x) - x*cos(y(x))*diff(y(x), x)
-Adam
More Answers (1)
zeeshan shafiq
on 2 Feb 2020
>> syms x y
>> f=inline('sin(x)+2*cos(y)','x',' y')
f =
Inline function:
f(x, y) = sin(x)+2*cos(y)
>> derivative=inline(diff(f(x,y),x,y),'x','y')
derivative =
Inline function:
derivative(x,y) = 0.0
>> derivative(2,5)
ans =
0
>>
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