Question

What are "Isolines”?​

Answer 1

Answer:

$\huge\bf{ \pink{ A}} \huge\bf{ \red{ N}}{ \green{S}} \huge\bf{ \blue{ W}} \huge\bf{ \purple{E}} \huge\bf{ \orange{R}} \huge\bf{ \orange{.....}}$

A contour line 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. It is a plane section of the three-dimensional graph of the function f parallel to the-plane.