Question

Let f(x, y) = y sin(1/x).

(a) What is the domain of f?

             I think it's all values of (x,y) where x is not 0

(b) What is the range of f; that is, which values does f(x, y) take for (x, y) in its domain?

             I think it's all real numbers

(c) Determine the limit lim (x,y)→(0,0) y sin(1/x) and explain your answer.

(d) For c = 0 and c = 1, write an equation for the level curve f(x, y) = c, and draw them in the region where −2 ≤ x ≤ 2 and −2 ≤ y ≤ 2. Please use two different colors to indicate the two level curves, and feel free to use a graphing calculator to help you!

(e) Explain why lim (x,y)→(0,1) y sin(1/x) does not exist.

(f) From the surfaces drawn on the back of this page, determine the graph of f. (I attached as an image)

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Image Transcription

D homework5.pdf x+ ← → ⓘ File file:///home/jessa/Downloads/homework5.pdf Apps Imported Fre N CAESAR: My Textfree We ) Canvas NU S Serif.nu D Kronos Work Spotify CalcPlot3D 0.5 0.0 1.0 0.5 z0.0 -0.5 OMenu- 圉囚一回包 间[Inbox (1)-Jess...-[Downloads] serif.nu-Googl İ My Drive-Goo.. PaperCut MF : g homework5.pdf

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