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Elastic2dVariable: Clean up alpha in getBoundaryOperator. Add alpha1 and alpha2 as boundary operators.
author Martin Almquist <malmquist@stanford.edu>
date Sat, 26 Jan 2019 16:56:35 -0800
parents ee4cfb37534d
children
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function [a,b,c,s] = rk4()

% Butcher tableau for classical RK$
s = 4;
a = sparse(s,s);
a(2,1) = 1/2;
a(3,2) = 1/2;
a(4,3) = 1;
b = 1/6*[1; 2; 2; 1];
c = [0; 1/2; 1/2; 1];

end