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• 00:43, 21 January 2022 Wikiadmin talk contribs created page Examples of level curves and level surfaces (Created page with "==Level curves== {| class="wikitable" | colspan="2" style="text-align: center;" | '''Examples''' |- | style="padding: 1em;" | <math>f(x,y) = x^2 + y^2</math> 300px || Make the function equal to a constant <math>f(x,y) = 1</math>. Then <math>1 = x^2 + y^2</math>. If you know the equation of a circle it should be obvious that this is the equation of a circle with radius = 1. Choose <math>x = 0</math> and you get <math>y = \pm \sqrt{1}</math...")