Before revision: A contour line (also isoline, isopleth, isoquant or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value.Courant, Richard, Herbert Robbins, and Ian Stewart.
After revision: Name : mohammed Alkhader Ali AlkhaderReg no: 213012Class : B2CDR : Fahmi hekmetA contour line (also isoline, isopleth, isoquant or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value.Courant, Richard, Herbert Robbins, and Ian Stewart.