how can i make this function work with arrays?

i have this function which works great but whenever i input an array it says "matrix dimensions must agree"

function [f]=colebrook(R,k)

f=fzero(@(f) 1/sqrt(f)+2*log10(k/3.7+2.51/(R*sqrt(f))),[1e-18,1]);

end

what can i edit to make it work with arrays?

[dpb]

Use the "dot" math operators for * and / for element-by-element operation instead of matrix.

See section on "Array vs Matrix Operations" in documentation or type

doc mtimes
doc rdivide

Answer 1

[Sulaymon Eshkabilov]

Elementwise operation:

...
f=fzero(@(f) 1./sqrt(f)+2*log10(k/3.7+2.51./(R*sqrt(f))),[1e-18,1]);
...