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Question
计算含有偏微分的二重积分积不出来答案是为什么，百度也没找到解决办法，求大佬帮忙看看！
b=0.0175;h=0.114;h0=0.01;N=4;r0=0.0325;d1=(h-(N+1)*h0)/N; syms x y n; U=x*y+symsum(32*b^2*(-1)^((n+1)/2)*sin(n*pi*x/(2*b))*sin...
2 years ago | 1 answer | 0
