Multiple Choice
Find the points at which the graph of the equation has a vertical or horizontal tangent line.
A) There is a horizontal tangent at but no vertical tangents.
B) There is a horizontal tangent at and a vertical tangent at
.
C) There is a vertical tangent at but no horizontal tangents.
D) There is a horizontal tangent at and a vertical tangent at
.
E) There are no horizontal or vertical tangent lines.
Correct Answer:

Verified
Correct Answer:
Verified
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