matlab课后习题及答案详解.pdf

 1 󰄄 MATLAB 

1.1 󰁱󰁵 MA TLAB 󰁵

MATLAB 󰁖󰁉

1.2 MA TLAB 󰁏󰇧

MATLAB 󰆗󰁏 MA TLAB  MATLAB 󰁵󰀬󰁉

󰇧

1.3 󰆮 MATLAB 󰂾󰃕󰇧󰅰󰁖󰆮

󰂾󰆮 MA TLAB 󰆮󰁏󰃕󰇧󰅰󰇒

󰃕󰆮 MATLAB 󰆮󰆮󰁖󰃕󰂾󰆮󰅛󰄗

1.5  M  /

󰂾󰇵󰆾󰃕󰇵 M  /󰂾

󰅰 edit  M  /

1.6 󰂾󰇵󰅰󰇧󰇵

󰂾󰇵󰇧󰇧 󰂾󰇵󰙮󰅰󰇧

󰇧󰂽󰅰󰂎

1.7 󰁖󰁉

󰁉󰁠󰅑󰅔󰅰

󰅰󰅑 M 󰅰

1.8 󰅣󰂾󰂾󰁖

1󰆚󰙮󰃕 view 󰅰 Help 󰃕 Help 󰅰 MA TLAB Help 

󰆚󰙮

2help 󰂾 help 󰆚󰆗 help 󰅘

󰂾󰆚

3lookfor 󰂾 lookfor 󰁱



4󰇔 Tab 󰁖󰄤󰇔



󰆠󰀊 lookfor 󰂾󰁉 help 



2.2 󰁖󰅶󰄵󰁖󰁋

󰁉󰅶󰄵

󰅑 a=[2 5 7 3] 󰁋

 M 󰄵󰁉󰁠󰄵󰁠

󰁏 y=sin(x) 󰁏 MATLAB 󰄵

󰁉󰁏

2.3 󰂾󰂯󰇧󰂯󰄵󰂯󰁖

󰇧󰂯󰇧󰁖󰄵󰂯󰄵󰇡󰄵󰂯󰃖󰄵

a 󰁱 b  a*b󰇡 a 󰁠 b 

2.4 󰇧󰂯󰄵󰂯󰂯󰁖

>> b=[2 4 2;6 7 9;8 3 6];

>> a+b

ans =

2.6 

>> x=[4+8i 3+5i 2-7i 1+4i 7-5i;3+2i 7-6i 9+4i 3-9i 4+4i];

2.7 

572

396

a

󰁱

864

142

b

󰇧

>> a=[6 9 3;2 7 5];

>> b=[2 4 1;4 6 8];

>> a.*b

ans =

2.8 󰇱󰁱󰁘󰁖

󰂾󰇱 x=a\b  a*x=b 󰁘 x=b/a  x*a=b  a\b b/a

X =

-0.5118

2.10 󰅊

>> a=[1 2 3;4 5 6;7 8 9];

>> a.^2

ans =

>> a^2

ans =

102 126 150

>> a>b

ans =

>> a>=b

ans =

>> a<b

ans =

>> a<=b

ans =

2.12

7.0802.05a

󰂾󰂯 a 󰁠

󰁠 a=[1 1 0 1 1] 

2.13 󰂾 sin(x)󰂯󰅰 x 

󰂾 sin(x) 󰂯󰅰 x  MA TLAB 󰁖󰂯󰂯

2.14 

604530x

 x 󰄿󰁦󰄿󰁦

>> x=[30 45 60];

>> x1=x/180*pi;

>> sin(x1)

ans =

>> cos(x1)