MATLAB编程练习（含答案很好的）(8)

090函数表达式; function f=exlin(x) if x<0 f=-1; elseif x<1 f=x; elseif x<2 f=2-x; else f=0; end

091：硬循环语句: n=5;

for i=1:n

for j=1:n if i==j a(i,j)=2; else a(i,j)=0; end end end

while 循环语句： n=1;

while prod(1:n)<99^99; n=n+1 end n

:092 switch开关语句 a=input('a=?') switch a

case 1

disp('It is raning') case 0

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disp('It do not know') case -1

disp('It is not ranging') otherwise

disp('It is raning ?') end

093画曲面函数： x1=linspace(-3,3,30) y1=linspace(-3,13,34) [x,y]=meshgrid(x1,y1);

z=x.^4+3*x.^2-2*x+6-2*y.*x.^2+y.^2-2*y; surf(x,y,z)

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