%(1)题x=0:0.01:2*pi;for k=1:8 y(k,:)=cos((2*k-1)*x); info{k}=['cos(',num2str(2*k-1),'*x)'];endplot(x,y)legend(info)xlabel('x')ylabel('y') %(2)题x=0.1:0.1:1;y=[3 1 8 16 12 18 23 27 30 13];plot(x,y)p3=polyfit(x,y,3);p5=polyfit(x,y,5);p8=polyfit(x,y,8);y3=polyval(p3,x);y5=polyval(p5,x);y8=pol...
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