curve sketching造句

Does anyone know a good computer program for curve sketching ( graphing ).
Instead of spending hours scribbling examples on the board, Prof . Joe Ecker discusses curve sketching.
I suggest the book's section on curve sketching and transformations as a fruitful source of information.
Informally, if " x " is a real number and " f " is a real function, " graph " may mean the graphical representation of this collection, in the form of a line chart : a curve on a Cartesian plane, together with Cartesian axes, etc . Graphing on a Cartesian plane is sometimes referred to as " curve sketching ".
I use the description curve sketching because I am interested in a program that is smart enough to know the important features of a graph ( e . g . intercepts, stationary points, critical points, etc . ) and mark them on the graph rather than just generating a curve and putting unimportant numbers on the axes . ( contribs ) 23 : 30, 13 November 2008 ( UTC)
It's difficult to find curve sketching in a sentence. 用curve sketching造句挺难的