JEE Advanced · Mathematics · 8. Trigonometric Equations
Let denote the determinant of a square matrix . Let be the function defined by where
Let be a quadratic polynomial whose roots are the maximum and minimum values of the function , and . Then, which of the following is/are TRUE ?
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Given,
Here we used
And
And
Also
So,
So,
Now maximum and minimum values are and respectively.
Now quadratic polynomial will be , where ,
But given , so .
Now solving all options we get,
Here we used
And
And
Also
So,
So,
Now maximum and minimum values are and respectively.
Now quadratic polynomial will be , where ,
But given , so .
Now solving all options we get,
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