Question:

Let f : \(\R → \R\) be the function defined by
\(f(x)=\text{det}\begin{pmatrix}1+x & 9 & 9 \\ 9 & 1+x & 9 \\ 9 & 9 & 1+x \end{pmatrix}\)
Then the maximum value of f on the interval [9, 10] equals

Updated On: Oct 1, 2024
  • 118
  • 112
  • 114
  • 116
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The Correct Option is D

Solution and Explanation

The correct option is (D) : 116.
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