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0.50.450.40.350.30.250.20.150.10.05000.20.40.60.81x1.21.41.61.82y8£¨1£© ½«Ò»¸öÆÁÄ»·Ö4·ù£¬Ñ¡ÔñºÏÊʵIJ½³¤ÔÚÓÒÉÏ·ùÓë×óÏ·ù»æÖƳöÏÂÁк¯ÊýµÄͼÐΡ£ ¢Ù

,x

£¨ÇúÏßͼ£©£»¢Úf(x,y)=

(-2<=x<=2,-4<=x<=4)£¨Çú

ÃæÍ¼£©¡£

´ð£ºsubplot(2,2,2);

ezplot('(cos(x))^(1/2)',[-pi/2 pi/2]); ylabel('y'); subplot(2,2,3); x=-2:0.5:2; y=-4:1:4;

ezsurfc('x^2/2^2+y^2/4^2')

(cos(x))1/210.5y0-1x2/22+y2/420x1105050y-5-5x05

(2) A ÊÇÒ»¸ö¾S¶Èm¡ÁnµÄ¾ØÕó. дһ¶Î³ÌÐò, Ëã³öAÖÐÓжàÉÙ¸öÁãÔªËØ¡£ ´ð£º>> A= input ('ÇëÊäÈëÒ»¸ö¾ØÕó') [m,n]= size(A); sig=0; for i=1:m for j=1:n if A(i,j)==0 sig = sig+1; end end end

ÇëÊäÈëÒ»¸ö¾ØÕó[0 1 2;1 0 2; 0 0 0] A = 0 1 2 1 0 2 0 0 0 >>sig sig = 5

9 ÏòÁ¿ A=[

]. дһ¶Î³ÌÐò, ÕÒ³öAÖеÄ×îÐ¡ÔªËØ¡£

´ð£ºA= input ('ÇëÊäÈëÒ»¸öÏòÁ¿') [m,n]=size(A) min =A(1,n); for i=1:n if A(1,i)

ÇëÊäÈëÒ»¸öÏòÁ¿[1 2 3 -5 2 0] A = 1 2 3 -5 2 0 min = -5

10 д³öÖ´ÐÐÒÔÏ´úÂëºóC£¬D£¬EµÄÖµ A=[1,2,3;4:6;7:9]; C=[A;[10,11,12]], D=C(1:3,[2 3]) E=C(2,[1 2]) C =

1 2 3 4 5 6