Question

maple,函数z=2x+sin(y) 2d打印怎么在一张图上同时输出x=2,x=5的两条z曲线

Answer 1

x=2,x=5 是三维平面,在 xoy 平面上的投影是直线.三维图形和二维图形如下所示：

implicitplot3d([z = 2*x+sin(y),x = 2,x = 5],x = -2*Pi ..2*Pi,y = -2*Pi ..2*Pi,z = -2*Pi ..2*Pi,numpoints = 10000,axes = boxed,color = [red,green,blue])

implicitplot([2*x+sin(y) = 0,x = 2,x = 5],x = -2*Pi ..2*Pi,y = -2*Pi ..2*Pi,axes = boxed,color = [red,green,blue],legend = [2*x+sin(y) = 0,x = 2,x = 5])