Solve the problem.Find equations for the horizontal and vertical tangent lines to the curve  

A. Horizontal:  at  at ; vertical:  at  at 

B. Horizontal:  at ,   at  at ; vertical:   at   at  at 

C. Horizontal:  at  at  ; vertical:  at  at  

D. Horizontal: at   at  at ; vertical:   at  at   at 


Answer: B

Mathematics

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