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Given a function [latex]f\,(x,\ y)[/latex] and a number [latex]c[/latex] in the range of [latex]f[/latex], a level curve of a function of two variables for the value [latex]c[/latex] is defined to be the set of points satisfying the equation [latex]f\,(x,\ y)=c[/latex].
Feb 28, 2021 · Calculus 3 video that explains level curves of functions of two variables and how to construct a contour map with level curves. We begin by introducing a typical temperature map as an...
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- Houston Math Prep
Learn how to find level curves of a function in Calculus 3.
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- The Math Sorcerer
A level curve of a function $f(x,y)$ is the curve of points $(x,y)$ where $f(x,y)$ is some constant value. A level curve is simply a cross section of the graph of $z=f(x,y)$ taken at a constant value, say $z=c$.
. THEOREM 15.12. The Gradient and Level Curves. Given a function. f. differentiable at. (a,b) , the line tangent to the level curve of. f. at. (a,b) is orthogonal to the gradient. ∇f(a,b) , provided. ∇f(a,b)≠0. . Proof: Consider the function. z=f(x,y)
Nov 16, 2022 · The next topic that we should look at is that of level curves or contour curves. The level curves of the function \(z = f\left( {x,y} \right)\) are two dimensional curves we get by setting \(z = k\), where \(k\) is any number.
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Let $f(x,y) = x^2-y^2$. We will study the level curves $c=x^2-y^2$. First, look at the case $c=0$. The level curve equation $x^2-y^2=0$ factors to $(x-y)(x+y)=0$. This equation is satisfied if either $y=x$ or $y=-x$. Both these are equations for lines, so the level curve for $c=0$ is two lines.
