How can I calculate the gradient of a vector in MATLAB?

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Sergio
Sergio 2024-4-27
回答： Star Strider 2024-4-27
I have
The vector r, which is a 1x8 vector,
r=(r_1, r_2,…,r_8)^T,
and the Jacobian defined by J, as a 8x8 matrix
J = (\partial r_1/partial k_1 \partial r_1/partial k_2
\partial r_2/partial k_1 \partial r_2/partial k_2
…
\partial r_8/partial k_1 \partial r_8/partial k_2)
and I have F = 0.5 \sum_i r_i^2
How can I find the gradient of F with respect to k?
Thanks

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采纳的回答

Star Strider
Star Strider 2024-4-27
That depends on how you want to do it.
The Symbolic Math Toolbox has the gradient and jacobian functions.
To do it numerically, use the gradient function.

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