How to define in Matlab a function with a 3 variable input as a function with a vector input












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Say that I want to write an m-file to find the value of the following function:



$f(x,y,z) = frac{1}{2}left[left(2 x-yz-1right)^{2}+left(1-x-y - exp(x-z)right)^{2}+left(-x-2y+3zright)^{2} right]$



and I want the input to be a vector of the form $w=[x,y,z]$.



How would I code that so that each component of the vector gets assigned to its corresponding variable in the function?



Essentially, my goal is to call the function in another function, SteepestMin(func,$x0$,$t$,itmax,tol), where func is where this function I'm asking about here is supposed to go, and $x0$ is an initial starting value, say $x0=[1.5,0.5,0.5]$, $t$ is the starting stepsize, itmax is the number of iterations and tol is a given tolerance.



Thank you for your time and patience.










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    1












    $begingroup$


    Say that I want to write an m-file to find the value of the following function:



    $f(x,y,z) = frac{1}{2}left[left(2 x-yz-1right)^{2}+left(1-x-y - exp(x-z)right)^{2}+left(-x-2y+3zright)^{2} right]$



    and I want the input to be a vector of the form $w=[x,y,z]$.



    How would I code that so that each component of the vector gets assigned to its corresponding variable in the function?



    Essentially, my goal is to call the function in another function, SteepestMin(func,$x0$,$t$,itmax,tol), where func is where this function I'm asking about here is supposed to go, and $x0$ is an initial starting value, say $x0=[1.5,0.5,0.5]$, $t$ is the starting stepsize, itmax is the number of iterations and tol is a given tolerance.



    Thank you for your time and patience.










    share|cite|improve this question









    $endgroup$















      1












      1








      1





      $begingroup$


      Say that I want to write an m-file to find the value of the following function:



      $f(x,y,z) = frac{1}{2}left[left(2 x-yz-1right)^{2}+left(1-x-y - exp(x-z)right)^{2}+left(-x-2y+3zright)^{2} right]$



      and I want the input to be a vector of the form $w=[x,y,z]$.



      How would I code that so that each component of the vector gets assigned to its corresponding variable in the function?



      Essentially, my goal is to call the function in another function, SteepestMin(func,$x0$,$t$,itmax,tol), where func is where this function I'm asking about here is supposed to go, and $x0$ is an initial starting value, say $x0=[1.5,0.5,0.5]$, $t$ is the starting stepsize, itmax is the number of iterations and tol is a given tolerance.



      Thank you for your time and patience.










      share|cite|improve this question









      $endgroup$




      Say that I want to write an m-file to find the value of the following function:



      $f(x,y,z) = frac{1}{2}left[left(2 x-yz-1right)^{2}+left(1-x-y - exp(x-z)right)^{2}+left(-x-2y+3zright)^{2} right]$



      and I want the input to be a vector of the form $w=[x,y,z]$.



      How would I code that so that each component of the vector gets assigned to its corresponding variable in the function?



      Essentially, my goal is to call the function in another function, SteepestMin(func,$x0$,$t$,itmax,tol), where func is where this function I'm asking about here is supposed to go, and $x0$ is an initial starting value, say $x0=[1.5,0.5,0.5]$, $t$ is the starting stepsize, itmax is the number of iterations and tol is a given tolerance.



      Thank you for your time and patience.







      vectors matlab






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      asked Dec 18 '18 at 20:41









      ALannisterALannister

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      1,75231451






















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