matlab请问为什么不能用红色*标记出正弦曲线和余弦曲线的交点x=[0:pi/10:2*pi];y1=sin(x);y2=cos(x);length_of_x=length(x);plot(x,y1,'LineWidth',4);hold onplot(x,y2,'r--','LineWidth',4);for i=1:length_of_xif y1(i)==y2(i)hold onplot(
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![matlab请问为什么不能用红色*标记出正弦曲线和余弦曲线的交点x=[0:pi/10:2*pi];y1=sin(x);y2=cos(x);length_of_x=length(x);plot(x,y1,'LineWidth',4);hold onplot(x,y2,'r--','LineWidth',4);for i=1:length_of_xif y1(i)==y2(i)hold onplot(](/uploads/image/z/8324764-52-4.jpg?t=matlab%E8%AF%B7%E9%97%AE%E4%B8%BA%E4%BB%80%E4%B9%88%E4%B8%8D%E8%83%BD%E7%94%A8%E7%BA%A2%E8%89%B2%2A%E6%A0%87%E8%AE%B0%E5%87%BA%E6%AD%A3%E5%BC%A6%E6%9B%B2%E7%BA%BF%E5%92%8C%E4%BD%99%E5%BC%A6%E6%9B%B2%E7%BA%BF%E7%9A%84%E4%BA%A4%E7%82%B9x%3D%5B0%3Api%2F10%3A2%2Api%5D%3By1%3Dsin%28x%29%3By2%3Dcos%28x%29%3Blength_of_x%3Dlength%28x%29%3Bplot%28x%2Cy1%2C%27LineWidth%27%2C4%29%3Bhold+onplot%28x%2Cy2%2C%27r--%27%2C%27LineWidth%27%2C4%29%3Bfor+i%3D1%3Alength_of_xif+y1%28i%29%3D%3Dy2%28i%29hold+onplot%28)
matlab请问为什么不能用红色*标记出正弦曲线和余弦曲线的交点x=[0:pi/10:2*pi];y1=sin(x);y2=cos(x);length_of_x=length(x);plot(x,y1,'LineWidth',4);hold onplot(x,y2,'r--','LineWidth',4);for i=1:length_of_xif y1(i)==y2(i)hold onplot(
matlab请问为什么不能用红色*标记出正弦曲线和余弦曲线的交点
x=[0:pi/10:2*pi];
y1=sin(x);
y2=cos(x);
length_of_x=length(x);
plot(x,y1,'LineWidth',4);
hold on
plot(x,y2,'r--','LineWidth',4);
for i=1:length_of_x
if y1(i)==y2(i)
hold on
plot(x(i),y1(i),'r*')
end
end
matlab请问为什么不能用红色*标记出正弦曲线和余弦曲线的交点x=[0:pi/10:2*pi];y1=sin(x);y2=cos(x);length_of_x=length(x);plot(x,y1,'LineWidth',4);hold onplot(x,y2,'r--','LineWidth',4);for i=1:length_of_xif y1(i)==y2(i)hold onplot(
你的x=[0:pi/10:2*pi]就决定了x是一每隔pi/10取一个点 而我们知道 y1(i)==y2(i)的条件即为√2*sin(x - π/4)=0 当x∈(0,π/2)时x=(π/4,5π/4) 问题来了 之前你x有取到这两个值么?