matla绘制x*sin(x)图像时x=-1:0.0005:1;y=x.*sin(x)为什么要用点乘，点乘代表的是指数啊
matla \u7ed8\u5236\u51fd\u6570\u56fey=max(1/2-1/x,0)x = -10:0.1:10;
y = max(1/2-1./x, 0*x);
plot(x, y);
sin(x)\u4e0ecos(x) \u76f8\u4e58 \uff0c\u5982\u679c\u7528\u7684\u662f\u70b9\u4e58\uff0c\u8bf4\u660ex\u662f\u4e00\u4e2a\u5411\u91cf\uff08\u6216\u8005\u77e9\u9635\uff09\uff0c\u800c\u4e0d\u662f\u4e00\u4e2a\u6570\u503c\u3002
\u5f53x\u662f\u4e00\u4e2a\u6570\u503c\u65f6\uff0csin(x)\u4e0ecos(x) \u76f8\u4e58\uff0c\u5c31\u4f7f\u7528\u666e\u901a\u7684\u4e58\u53f7\u65e2\u53ef\u4ee5\u4e86\u3002
\u4e00\u4e2a\u6570\u4e0esin(x)\u76f8\u4e58\uff0c\u4e0d\u7ba1x\u662f\u6570\u503c\uff0c\u8fd8\u662f\u5411\u91cf\uff08\u6216\u77e9\u9635\uff09\uff0c\u90fd\u53ef\u4ee5\u7528\u666e\u901a\u7684\u4e58\u53f7\u3002
\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u4f60\u89e3\u5f00\u7591\u60d1\uff0c\u795d\u5b66\u4e60\u8fdb\u6b65\uff01
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绛旓細f=@(x)x.*sin(x)-1/2;x=fsolve(f,[-10:1:10])x = Columns 1 through 6 -9.3714 -9.3714 -6.3619 -6.3619 -2.9726 -2.9726 Columns 7 through 12 -0.7408 0.7408 2.9726 2.9726 2.9726 6.3619 Columns 13 through 15 6.3619 9.3714...
