MCQ
If a variable point P move such that $x=a$ and $y=b$ then its locus is given by :
- Aa plane parallel to XY - plane
- Ba line parallel to X - axis
- Ca line parallel to Y - axis
- ✓a line parallel to Z- axis
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($A$) $f\left(\frac{1}{2}\right) \geq f(1)$
($B$) $f\left(\frac{1}{3}\right) \leq f\left(\frac{2}{3}\right)$
($C$) $f^{\prime}(2) \leq 0$
($D$) $\frac{f^{\prime}(3)}{f(3)} \geq \frac{f^{\prime}(2)}{f(2)}$