Home › CBSE Class 12 (Commerce) › Mathematics › Application of Derivatives › For x > 0, how small can x + 4/x get?
For x > 0, how small can x + 4/x get?
A4
B5
C8
D2
Answer & Solution
Correct answer: A. 4
The derivative 1 − 4/x² is zero at x = 2, where the value is 2 + 2 = 4.
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