If \( x, y, z \) are positive numbers in AP then
\( \mathrm{P} \)
(... VIDEO
If \( x, y, z \) are positive numbers in AP then
\( \mathrm{P} \)
(a) \( y^{2} \geq x z \)
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(b) \( y \geq 2 \sqrt{x z} \)
(c) \( \frac{x+y}{2 y-x}+\frac{y+z}{2 y-z} \) has the minimum value 2
(d) \( \frac{x+y}{2 y-x}+\frac{y+z}{2 y-z} \geq 4 \)
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