How do you plot a Midpoint Riemann Sum
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function[] = graph_integration_method(fhandle,lo,hi,N)
hold on;
fplot(fhandle,[lo, hi]);
x = linspace(lo,hi,N+1);
dx = diff(x);
for index = 1:N
rectangle('position',[x(index) 0 dx(index) fhandle(index)/2]);
end
end
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