Ononot — A heat map represents the function h(x, y) = x^2 + 2y^2. If

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Data Visualizationhard

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A heat map represents the function $h(x, y) = x^2 + 2y^2$ . If the color scale maps values $v \in [0, 10]$ to a gradient, what is the shape of the boundary where the color intensity is constant at $v=4$ ?