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help me with nonlinear Project

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Ana Garvanlieva
Ana Garvanlieva 2015-1-15
关闭： MATLAB Answer Bot 2021-8-20
I need to compute this nonlinear equations with Jacobian
x^5 + y^3 * z^4 + 1, x^2 * y * z, z^4 - 1.
Can anyone help me, because non of the examples on mathlab are for this kind of equations....
  2 个评论
Mohammad Abouali
Mohammad Abouali 2015-1-15
what do you mean by "... compute this nonlinear equations with Jacobian"?
You want to calculate the Jacobian of it?
Ana Garvanlieva
Ana Garvanlieva 2015-2-27
So i Insert theese comands
>> syms x1 x2 x3
>> J1 = jacobian([x1^5 + x2^3*x3^4 + 1; x1^2*x2*x3; x3^4-1],[x1;x2;x3])
>> x3=0
How to call the matrix now?
When I call it with
>> J1 = jacobian([x1^5 + x2^3*x3^4 + 1; x1^2*x2*x3; x3^4-1],[x1;x2;x3])
i get
J1 =
[ 5*x1^4, 0, diff(x1^5 + 1, 0)]
[ 0, 0, diff(0, 0)]
[ 0, 0, diff(-1, 0)]
And why do I need inv(J) for x0=(-.01, -.01, -.01)^T???
Thank you verry much for your responces...

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