% exa10_1
xx=(1:5)/5*pi;yy=sin(xx).*exp(xx)
a=magic(2)
a =
1 3
4 2
% exa10_2
syms x y;
f=x^3*y+y^0.5;
Dfdxdy=diff(diff(f,x),y),
S=int(int(f,y,1,x^2),x,1,2)
Dfdxdy =
3*x^2
S =
763/48
% exa10_3
t=0:pi/10:2*pi;
[X,Y,Z]=cylinder(4*cos(t)+1);
mesh(X,Y,Z)
% exa_10_4
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