The function f (x) = cos ( (x+ x^ 2 +1 ) ) is :
Mathematics · JEE Main · NTA Exams — Sets, Relations and Functions
The function f (x) = cos \(\left(\log \left(x+\sqrt{x^{2}+1}\right)\right)\) is :
- even
- odd
- constant
- None of these
Answer
(A) even
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