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x=0:0.1:1; y=[-0.447 1.978 3.28 6.16 7.08 7.34 7.66 9.56 9.48 9.30 11.2]; R=[(x.^2)' x' ones(11,1)]; A=R\y'

x=[1 2 4 7 9 12 13 15 17]; f=[1.5 3.9 6 11.7 12.6 18.8 20.3 20.6 21.1]; axis([0 18 1 22]) xlabel('x') ylabel('f') y=1:0.1:17; figure(1) plot(x,f,'o') gtext('已知数据点') hold on;pause bb1=inte

[x,fval]=fminbnd('fun0',0,1.5); xmax=x fmax=-fval

[x,y]=meshgrid(-2:0.1:2,-1:0.1:3); z=100*(y-x.^2).^2+(1-x).^2; mesh(x,y,z)

[x,y]=meshgrid(-2:0.1:2,-1:0.1:3); z=100*(y-x.^2).^2+(1-x).^2; contour(x,y,z,20) hold on plot(-1.2,2,' o '); text(-1.2,2,'start point') plot(1,1,'o') text

/* Default linker script, for normal executables */ OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm") OUTPUT_ARCH(arm) ENTRY(_start) /* Do we need any of these for elf? __D

/* Default linker script, for normal executables */ OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm", "elf32-littlearm") OUTPUT_ARCH(arm) ENTRY(_start) SEARCH_DIR("=/usr/local/lib"); SEARCH_DIR(

%x=-1:0.01:1; %y1=5000./(1+25.*x.^2).^3.*x.^2-50./(1+25.*x.^2).^2; function sm=sanci2(x,y,x1) y1=0; y11=0; n=length(x); h(1)=x(2)-x(1); for i=2:n-1 h(i)=x(i+1)-x(i); lm(i)=h(i)/(h(i-1

x=-1:0.01:1; y1=-50./(1+25.*x.^2).^2.*x; n=length(x); h(1)=x(2)-x(1); for i=2:n-1 h(i)=x(i+1)-x(i); lm(i)=h(i)/(h(i-1)+h(i)); mu(i)=1-lm(i); c1(i)=3*(lm(i)*(fg(x(i))-fg(x(i-1))

x=1:8; y=[15.3,20.5,27.4,36.6,49.1,65.6,87.8,117.6]; y1=log(y); n=1;%表示用一次函数拟和 m=length(x); A=zeros(m,n+1); for i=1:2 A(:,i)=x.^(i-1)'; end B=A'*A; C=A'*y1'; re=B\C; a=exp(re(1)); b=r