How can I do curve fitting depending in the following formula?

I am doing a research and I want to do curve fitting and know the value of "V" depinding on the following function:

F(V) = (K-M*W^2)*V

K,M,W are known matrices, V is a vector and its size is 7*1

I know the 2nd, 4th and 6th values of V, and I want to know the rest values using a curve fitting depending on the above function.

Any suggestions please?

Note: I have used so many techniques of curve fitting like ploy, exp,... / Lagrange inter. / Spline ... but they didn't return the exact values that I want, that's why I want to use the above formula.

Thanks

Answer 1

[Image Analyst]

So you know K, M, W, and 3 of the 7 values of V. Can't you just multiply out all the matrices, and have the remaining values of V be unknowns. Of course you need the value of F or you can't do the fit. But then you can simply use fitlm to determine the unknown values of V.

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