Question

Use a CAS to plot the surfaces in Exercises 53–55. Identify the type of quadric surface from your graph.

53. x2 /9 + y2/ 36 = 1 - z2/25

54. 5x2 = z2 - 3y2

55. x2 /9 - 1 = y2 /16 + z2/ 2

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