a goner的博客MATLAB 二元二次函数出图 老是出现错误,xy的个数不同不能计算z值,改为[x,y]=meshgrid(72.00:80.00,65.00:90.00);z=x*pi.*y.*y./1000000;mesh(x,y,z) 使用matlab的fmincon优化,一直提示变量“x”未定义,...
猪了个去的博客编写了一个用solve解方程的程序,一运行就说Undefined function or variable 'Ni'.Error in Nedensity (line 31)sol=solve(P-(NN2+NO2+NN+NO+NN2_1+NN_1+NO2_1+NO_1+Ne)*k*T+(k*T)/(24*pi*(((E0*k*T)/((Ne+NN2_1+NN_...