Multiple Choice
Find the values of a constant c such that the vector n = cj + k is normal to a family of parallel planes that intersect the elliptic cylinder x2 + 4y2 = 4 in circles.
A) c = ±
B) c = ±
C) c = ± 2
D) c = ± 1
E) c = 0
Correct Answer:

Verified
Correct Answer:
Verified
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