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Project 6 Solutions

# Project 6 Solutions - -2-1.5-1-0.50.51PROJECT#6Team Name...

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Unformatted text preview: -3-2-1123-2-1.5-1-0.50.51PROJECT #6Team Name: The UnknownsMembers:HristianDivyaSofiaAnnon1.(a)>> k=[0 1 2 3 4 5 6];>> x=-3+k;>> y=-abs(x)+1;>> xx=-3:.01:3;>> yy=spline(x,y,xx);>> plot(xx,yy,x,y,'o',x,y)(b)>> k=[0 1 2 3 4 5 6];>> x=-3+k;>> y=zeros(size(x));-3-2-11230.10.20.30.40.50.60.70.80.91>> for i=1:size(y,2);y(i)=1/(1+(x(i)^2));end>> xx=-3:.01:3;>> yy=spline(x,y,xx);>> plot(xx,yy,x,y,'o',x,y)(c) >> k=[0 1 2 3 4 5 6];>> x=-3+k;>> y=sin(x);>> xx=-3:.01:3;>> yy=spline(x,y,xx);>> plot(xx,yy,x,y,'o',x,y)-3-2-1123-1-0.8-0.6-0.4-0.20.20.40.60.812.Matlab code:function C = hermit(x,y,der)len = length(x);C=zeros(len-1,4);A=zeros(4,4);b=zeros(4,1);for i=1:len-1C(i,4)= y(i);C(i,3)= der(i);A(1:2,4)=1;A(3:4,3)=1;A(2,1)=(x(i+1)-x(i))^3;A(2,2)=(x(i+1)-x(i))^2;A(2,3)=(x(i+1)-x(i));A(4,1)=3*A(2,2);A(4,2)=2*A(2,3);b(1)=y(i);b(2)=y(i+1);b(3)=der(i);b(4)=der(i+1);x=A\b;C(i,1)=x(1);C(i,2)=x(2);end>> x=[1 2];>> y=[6 21];>> der=[ 7 25];>> hermit(x,y,der)ans =2.0000 6.0000 7.0000 6.00003.function ys=hermplot(x,y,der,xs)C=hermit(x,y,der);pp=mkpp(x,C);xs=x(1):.01:x(length(x));ys=ppval(pp,xs);4.FINISH UP!!!5.Matlab code:function A = dft(n)A=zeros(n,n);omega=exp((2*i*pi)/n);for r=1:nfor s=1:nA(r,s)=omega^((r-1)*(s-1));endend>> n=5;>> y=rand(n,1);>> A=dft(n);>> fft(y)-n*inv(A)*yans =1.0e-015 *0.4441 + 0.0004i0.3886 - 0.2220i0.1110 - 0.2220i0 -0.2776 + 0.2220i-4-3-2-11234-4-3-2-11234We can see that they are the same.We can see that they are the same....
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Project 6 Solutions - -2-1.5-1-0.50.51PROJECT#6Team Name...

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