Answer: Think About It The graphs labeled (a), (b), (c), and (d) are graphs of the
Chapter 13, Problem 31(choose chapter or problem)
Think About It The graphs labeled (a), (b), (c), and (d) are graphs of the function \(f(x, y)=-4 x /\left(x^{2}+y^{2}+1\right)\). Match the four graphs with the points in space from which the surface is viewed. The four points are (20, 15, 25), (-15, 10, 20), (20, 20, 0) and (20, 0, 0).
Text Transcription:
f(x, y)=-4x (x^2 + y^2 + 1)
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