DeGracia_Miguel_19481379_Section22_Lab11

# DeGracia_Miguel_19481379_Section22_Lab11 - Miguel De Gracia...

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Unformatted text preview: %% Miguel De Gracia. 19481379. Section 22. Lab Assignment 11. % %% Problem 1a % type my_bisection t fh=@(x)x^2+x-2; f [root,rhist,niter,error] = my_bisection(fh,-5,0,1e-5,'a',100) [root,rhist,niter,error] = my_bisection(fh,-5,0,1e-5,'r',100) [root,rhist,niter,error] = my_bisection(fh,-5,0,1e-5,'f',100) E = fzero(fh,-2) E [root,rhist,niter,error] = my_bisection(fh,0,5,1e-5,'a',100) [root,rhist,niter,error] = my_bisection(fh,0,5,1e-5,'r',100) [root,rhist,niter,error] = my_bisection(fh,0,5,1e-5,'f',100) E = fzero(fh,1) E fh = @(x)cos(x)-sin(x); f [root,rhist,niter,error] = my_bisection(fh,-5,0,1e-5,'a',100) [root,rhist,niter,error] = my_bisection(fh,-5,0,1e-5,'r',100) [root,rhist,niter,error] = my_bisection(fh,-5,0,1e-5,'f',100) E = fzero(fh,-2) E [root,rhist,niter,error] = my_bisection(fh,0,5,1e-5,'a',100) [root,rhist,niter,error] = my_bisection(fh,0,5,1e-5,'r',100) [root,rhist,niter,error] = my_bisection(fh,0,5,1e-5,'f',100) E = fzero(fh,1) E %% Problem 1b % fh = @(x)x^2+x-2; [root1,rhist1,niter1,error1] = my_bisection(fh,0,-50,1e-14,'a',100) semilogy(1:niter1,abs(rhist1-root1)),xlabel('n'),ylabel('abs(xn-x*)') s %% Problem 1c % P = polyfit(abs(rhist(1:end-1)-root),abs(rhist(2:end)-root),1); C = P(1) C %% Problem 2 % fnew = @(x) -x^cos(x)+5*sqrt(x)-exp(2*sin(x))-x^2+3; ezplot(fnew,[0 pi]) [root,rhist,niter,error] = my_bisection(fnew,0,1.5,1e-4,'f',100) fzero(fnew,1) [root,rhist,niter,error] = my_bisection(fnew,1.5,pi,1e-4,'f',100) fzero(fnew,2) f %% Problem 3a % type my_newton t fh = @(x)x^2+x-2; dfh = @(x)2*x+1; d [root,rhist,niter,error] = my_newton(fh,dfh,-1,1e-5,'a',100) [root,rhist,niter,error] = my_newton(fh,dfh,-1,1e-5,'r',100) [root,rhist,niter,error] = my_newton(fh,dfh,-1,1e-5,'f',100) E = fzero(fh,-2) E [root,rhist,niter,error] = my_newton(fh,dfh,0,1e-5,'a',100) [root,rhist,niter,error] = my_newton(fh,dfh,0,1e-5,'r',100) [root,rhist,niter,error] = my_newton(fh,dfh,0,1e-5,'f',100)...
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## This note was uploaded on 02/18/2010 for the course ENGINEERIN 7 taught by Professor Patzek during the Spring '08 term at Berkeley.

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DeGracia_Miguel_19481379_Section22_Lab11 - Miguel De Gracia...

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