Question: Error, unable to match delimiters, total beginner to Maple, please could someone give me a couple of pointers in the right direction?

December 09 2013 rwooduk 5


I need to plot the band structure of Graphene using Maple, Ive written out the eqn as given in the homework, but when i hit enter it says "error. unable to match delimiters"


i have no idea what that means, here is the eqn i have typed into Maple:

i have been given values for gamma and acc, do i just type them in after, E is a function of k (kx,ky,kz) do i put that in brackets after the E?



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