Hi I'm using wxmaxima to evaluate
U(y,z):=(p*c^2)/(2*mu)*(1-(2/c)^2+4*sum((-1)^k/(alpha*k^3)*(cosh((alpha*y)/c)/cosh((alpha*b)/c)*cosh((alpha*z)/c)),k,1,inf))
alpha = (2*k-1)*(pi/2)
at y = 0.08333335
and z = 0.00001
the program won't evaluate the sum all it will do is give the equation back with the summation sign.
I want the answer for U(0.08333335, 0.00001).
Any help would be appreciated