The curve defined by has a vertical tangent line at which of the following point(s)?
MATHEMATICS · Single correct · AP · Calculus AB · Differentiation: Composite, Implicit, and Inverse Functions · Differentiation: Composite, Implicit, and Inverse Functions
Problem
The curve defined by x2+y2=4y has a vertical tangent line at which of the following point(s)?
(a) (2,2) only
(b) (0,4) only
(c) (0,0) only
(d) (2,2) and (−2,2)