习题1
matlab
syms t z;
Gam=int(exp(-t)*t^(z-1),t,0,inf);
I1=subs(Gam,z,sym(1/2)),
I2=subs(Gam,z,sym(3/2)),
I3=subs(Gam,z,sym(5/2)),
I4=subs(Gam,z,sym(7/2))