在一个图形窗口同时绘制[0,2π]的正弦曲线、余弦曲线,不可以使用命令( )。
A: x=(0:0.01:2*pi)'; Y=[sin(x),cos(x)]; plot(x,Y);
B: x=(0:0.01:2*pi);Y=[sin(x);cos(x)];plot(x,Y);
C: ezplot(@(x)sin(x),@(x)cos(x),[0,2*pi])
D: ezplot(@(x)sin(x),[0,2*pi]),hold on ,ezplot(@(x)cos(x),[0,2*pi])
A: x=(0:0.01:2*pi)'; Y=[sin(x),cos(x)]; plot(x,Y);
B: x=(0:0.01:2*pi);Y=[sin(x);cos(x)];plot(x,Y);
C: ezplot(@(x)sin(x),@(x)cos(x),[0,2*pi])
D: ezplot(@(x)sin(x),[0,2*pi]),hold on ,ezplot(@(x)cos(x),[0,2*pi])
举一反三
- (3分)<br/>在一个图形窗口同时绘制[0,2π]的正弦曲线、余弦曲线,可以使用命令( )。 A: x=(0:0.01:2*pi)';<br/>Y=[sin(x),cos(x)]; plot(x,Y); B: x=(0:0.01:2*pi);<br/>Y=[sin(x);cos(x)]; plot(x,Y); C: fplot(@(x)sin(x),@(x)cos(x),[0,2*pi]) D: fplot(@(x)sin(x),cos(x),[0,2*pi])
- 函数绘图命令使用正确的是 A: fplot('sin(x)',[0,2*pi],'r') B: fplot('x*sin(x)',[0,2*pi],r) C: fplot(‘[sin(x),cos(x)]’,[0,2*pi]) D: plot('x^2',[0,2*pi],'r')
- 在[0，2π]区间绘制 的曲线程序：x=0:pi/100:2*pi;( );plot(x,y); A: A.y=2x^2sin(x); B: B.y=2*x^2*sin(x); C: C.y=2*x.^2.*sin(x); D: D.y=2*x^2.*sin(x);
- 8. 下列不等式正确的是 A: $0\lt \int_{0}^{\frac{\pi }{2}}{\sin (\sin x)dx}\lt \int_{0}^{\frac{\pi }{2}}{\cos (\sin x)dx}$ B: $0\lt \int_{0}^{\frac{\pi }{2}}{\cos (\sin x)dx}\lt \int_{0}^{\frac{\pi }{2}}{\sin (\sin x)dx}$ C: $\int_{0}^{\frac{\pi }{2}}{\sin (\sin x)dx}\lt 0\lt \int_{0}^{\frac{\pi }{2}}{\cos (\sin x)dx}$ D: $\int_{0}^{\frac{\pi }{2}}{\cos (\sin x)dx}\lt 0\lt \int_{0}^{\frac{\pi }{2}}{\sin (\sin x)dx}$
- 画出单位圆点列图 A: ListPlot[Table[{Cos[x],Sin[x]},{x,0,2Pi,0.2}]] B: ListPlot[Table[{Cos[x],Sin[x]},{x,0,2Pi,0.2},AspectRatio → Automatic]] C: ListPlot[Table[{Cos[x], Sin[x]},{x,0,2Pi,0.2}],AspectRatio → Automatic] D: ListPlot[Table[{Cos[x],Sin[x]},{x,0,2Pi,0.2}], Joined→True]