Practicing Success
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Domain of function $f(x)=cos^{-1}\sqrt{2x-1}$ is |
[-1, 1] $\left(\frac{1}{2}, 1\right]$ $\left[\frac{1}{2}, 1\right]$ $\left[\frac{1}{2}, 1\right)$ |
$\left[\frac{1}{2}, 1\right]$ |
The correct answer is Option (3) → $\left[\frac{1}{2}, 1\right]$ $f(x)=\cos^{-1}\sqrt{2x-1}$ $0≤2x-1≤1⇒1≤2x≤2$ $\frac{1}{2}≤x≤1⇒x∈\left[\frac{1}{2}, 1\right]$ |
