画(3x+4y-2)^2+(4x-5y+7)=1的图像,为什么老是有错误呢?th = (linspace(0,2*pi,100))';X=(5*cos(th)+4*sin(th)-18)/31;Y=1/2+cos(th)/4-3*(5*cos(th)+4*sin(th)-18)/31;polt(X,Y,'linewidth',2)看到了,那这道题可以用plot函数吗?如
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![画(3x+4y-2)^2+(4x-5y+7)=1的图像,为什么老是有错误呢?th = (linspace(0,2*pi,100))';X=(5*cos(th)+4*sin(th)-18)/31;Y=1/2+cos(th)/4-3*(5*cos(th)+4*sin(th)-18)/31;polt(X,Y,'linewidth',2)看到了,那这道题可以用plot函数吗?如](/uploads/image/z/3683942-62-2.jpg?t=%E7%94%BB%EF%BC%883x%2B4y-2%EF%BC%89%5E2%2B%284x-5y%2B7%29%3D1%E7%9A%84%E5%9B%BE%E5%83%8F%2C%E4%B8%BA%E4%BB%80%E4%B9%88%E8%80%81%E6%98%AF%E6%9C%89%E9%94%99%E8%AF%AF%E5%91%A2%3Fth+%3D+%28linspace%280%2C2%2Api%2C100%29%29%27%3BX%3D%285%2Acos%28th%29%2B4%2Asin%28th%29-18%29%2F31%3BY%3D1%2F2%2Bcos%28th%29%2F4-3%2A%285%2Acos%28th%29%2B4%2Asin%28th%29-18%29%2F31%3Bpolt%28X%2CY%2C%27linewidth%27%2C2%29%E7%9C%8B%E5%88%B0%E4%BA%86%EF%BC%8C%E9%82%A3%E8%BF%99%E9%81%93%E9%A2%98%E5%8F%AF%E4%BB%A5%E7%94%A8plot%E5%87%BD%E6%95%B0%E5%90%97%EF%BC%9F%E5%A6%82)
画(3x+4y-2)^2+(4x-5y+7)=1的图像,为什么老是有错误呢?th = (linspace(0,2*pi,100))';X=(5*cos(th)+4*sin(th)-18)/31;Y=1/2+cos(th)/4-3*(5*cos(th)+4*sin(th)-18)/31;polt(X,Y,'linewidth',2)看到了,那这道题可以用plot函数吗?如
画(3x+4y-2)^2+(4x-5y+7)=1的图像,为什么老是有错误呢?
th = (linspace(0,2*pi,100))';
X=(5*cos(th)+4*sin(th)-18)/31;
Y=1/2+cos(th)/4-3*(5*cos(th)+4*sin(th)-18)/31;
polt(X,Y,'linewidth',2)
看到了,那这道题可以用plot函数吗?如果可以,怎么编写?如果不可以,那又应该用什么函数呢?
如何用雅克比行列式求他的积分面积呢?
画(3x+4y-2)^2+(4x-5y+7)=1的图像,为什么老是有错误呢?th = (linspace(0,2*pi,100))';X=(5*cos(th)+4*sin(th)-18)/31;Y=1/2+cos(th)/4-3*(5*cos(th)+4*sin(th)-18)/31;polt(X,Y,'linewidth',2)看到了,那这道题可以用plot函数吗?如
polt这个函数名都错了,正确的是plot
楼主你公式的命令都打错拉 还有这个公式不能循环
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2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
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