Let the number \( 2, b, c \) be an A.P. and \( A= \)
\( \left[\begin{array}{lll}1 & 1 & 1 \\ 2 &....
Let the number \( 2, b, c \) be an A.P. and \( A= \)
\( \mathrm{P} \)
\( \left[\begin{array}{lll}1 & 1 & 1 \\ 2 & b & c \\ 4 & b^{2} & c^{2}\end{array}\right] \).
W.
interval:
(1) \( [2,3) \)
(2) \( \left(2+2^{3 / 4}, 4\right) \)
(3) \( \left[3,2+2^{3 / 4}\right] \)
(4) \( [4,6] \)
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