Question:medium
\(f(x) = \cos x - 1 + \frac{x^2}{2!}, \, x \in \mathbb{R}\)
Then \(f(x)\) is:
\(f(x) = \cos x - 1 + \frac{x^2}{2!}, \, x \in \mathbb{R}\)
Then \(f(x)\) is:
Then \(f(x)\) is:
Show Hint
When analyzing the behavior of a function, examine the sign of its derivative. If the derivative is not always positive or negative, the function may neither increase nor decrease uniformly.
Updated On: Nov 28, 2025
- decreasing function
- increasing function
- neither increasing nor decreasing
- constant for \(x>0\)
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