derived a function in malab

please i want derived this function on matleb is i don't know how

such as : Re1, Re2, taux1 , Bi , R0 , eta, are given parametrs

[darova]

Do you have any attempts? Any ideas?

[ZOUBAIR DAOUMA]

No i don't have any ideas how to calculate the derived of this function Numerically

[darova]

What does 'derived' mean? You want derivative of this function?

[ZOUBAIR DAOUMA]

yess i want derivative of this function in matlab

[darova]

What about diff?

[John D'Errico]

Is n different from eta? What is n? Importantly, is n a small integer?

[ZOUBAIR DAOUMA]

0<n<=1 for example n=1/3 or 1/2 or 2/3 .....

[ZOUBAIR DAOUMA]

and 'r' is also positive