How to get value of a function using for loop?? Please help.

%%First Derivatives of Shape Function
N1=diff(N1epsn,epsn)
N2=diff(N2epsn,epsn)
N3=diff(N3epsn,epsn)

Value of N1,N2 and N3 at -1,0,1.

[Virajan Verma]

Please help me. I am stuck in this for the last 4-5 days.

[madhan ravi]

What’s epsn , N1epsn??

[PromoCodeBSJ]

You have to give us a lot more than 3 useless lines of code