A.p=[2, 0, -3, 1]; x=roots(p)
B.p=[2, 0, -3, 1]; a=compan(p); x=eig(a)
C.syms x; x=solve(2*x^3-3*x+1==0, x); x=eval(x)
D.syms x; s=solve(2*x^3-3*x+1, x); x=eval(s)
第2题
A.>> fx=@(x) x-sin(x)/x; >> z=fzero(fx,1)
B.>> z=fzero(@(x) x-sin(x)/x,1)
C.>> fx=@(x) x-sin(x)/x; >> z=fsolve(fx,1)
D.>> z=fsolve(@(x) x-sin(x)/x,1)
第3题
A.>> fx=@(x) x-sin(x)/x; >> z=fzero(fx,-2)
B.>> z=fzero(@(x) x-sin(x)/x,-2)
C.>> fx=@(x) x-sin(x)/x; >> z=fsolve(fx,-2)
D.>> z=fsolve(@(x) x-sin(x)/x,-2)
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