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MathematicsFunctionsDomain-RangeEasy2 minQB

MathematicsEasysingle choice

The range of the function defined as $f (x) = cos^{- 1} (- {- x})$ is (where ${x}$ is fractional part of $x$ )

Answer:

Solution:

$0 \leq {- x} < 1\forall x \in R \Rightarrow - 1 < - {- x} \leq 0$ , so range of $f (x)$ is $[\frac{π}{2}, π)$

Stream:JEESubject:MathematicsTopic:FunctionsSubtopic:Domain-Range

⏱ 2mℹ️ Source: QB

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