(This type of math is Multivariable Calculus 1) 7. Sketch the level curves of f(x, y) = p 16 − x 2 − y 2 for levels c = 0, 1, 2, 3, 4. Can you describe the surface? 17. An ideal fluid flow is modeled with the velocity potential ϕ = 4x−3y and stream function ψ = 3x + 4y. Sketch some streamlines for this flow. Can you describe this flow in a sentence or two?
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