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April 18, 2015

April 18, 2015

Posted by **Taeyeon** on Sunday, February 26, 2012 at 4:10pm.

A. -4 B. -2 C. 2 D. 4 E. None of these

- calculus -
**Steve**, Monday, February 27, 2012 at 12:35amy = x + k/x

y' = 1 - k/x^2

1 - k/x^2 = 0

1 - k/4 = 0

k = 4

(D)

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