Application of Derivatives
NCERT Exemplar Class 12
CBSE
Grade 12
Question:
The minimum value of $n^2 + 1/n^2$ for $n \in \mathbb{N}$ is:
(a) $2$
(b) $1$
(c) $0$
(d) $4$
Step-by-Step Solution
n^2 + 1/n^2 >= 2 for any real non-zero n. [1.0 Mark]
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🎯 Official CBSE Marking Scheme:
Selecting $2$: 1.0 Mark
Correct Answer: $2$
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