I can't calculate the integral using the function integral2, matlab gives the following error
>> UntitledUndefined function 'mpower' for input arguments of type 'function_handle'.Error in @(x,y)Dx*(dwidx2)^2+Dy*(dwidy2)^2+Dxy*dwidx2*dwidy2+4*G*dwidydx2Error in integral2Calc>integral2t/tensor (line 229) Z = FUN(X,Y); NFE = NFE + 1;Error in integral2Calc>integral2t (line 56)[Qsub,esub] = tensor(thetaL,thetaR,phiB,phiT);Error in integral2Calc (line 10) [q,errbnd] = integral2t(fun,xmin,xmax,ymin,ymax,optionstruct);Error in integral2 (line 107) Q = integral2Calc(fun,xmin,xmax,yminfun,ymaxfun,opstruct);Error in Untitled (line 39) integral2(func,0,1.436,0,1.981)
my program is as follows:
clear all a=1.436;b=1.981;Nx=0.947;Ny=0.639;Nxy=0.799;Dx=1;Dy=1;Dxy=1;G=12*10^9;M = eye(9,2);A = eye(9,1);%matriz que define os pontos
i=1;for m=1:3 for n=1:3 M(i,:)= [m n]; i=i+1; end endfor i=1:9 m=M(i,1); n=M(i,2); ym=(4*m+1)*(pi/4); yn=(4*n+1)*(pi/4); Xm=@(x)(cosh(((ym/b)^2)*x)-cos((ym/b)^2*x))-((cosh((ym^2)/b)-cos((ym^2)/b))/((sinh((ym^2)/b)-sin((ym^2)/b))))*(sinh((ym/b)^2*x)-sin((ym/b)^2*x)); Yn=@(y) cosh(((yn/a)^2)*y)+cos((yn/a)^2*y)-((cosh((yn^2)/a)+cos((yn^2)/a))/(sinh((yn^2)/a)+sin((yn^2)/a)))*(sinh((yn/a)^2*y)+sin((yn/a)^2*y)); wi=@(x,y)Xm*Yn; dwidx2=@(x,y)diff(wi,x,2); dwidy2=@(x,y)diff(wi,y,2); dwidydx2=@(x,y)diff(diff(wi,x),y); func=@(x,y)Dx*(dwidx2)^2+Dy*(dwidy2)^2+Dxy*dwidx2*dwidy2+4*G*dwidydx2; integral2(func,0,1.436,0,1.981) end
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