Let A(0,1)B(1,1),C(1,−1),D(−1,0) be four points. If P is any other points, then PA+PB+PC+PD≥D, when [D] is_____, where [.] represents greatest integer.

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Let {A}{({0},{1})}{B}{({1},{1})},{C}{({1},-{1})},{D}{(-{1},{0}

Question

Let $A (0, 1) B (1, 1), C (1, - 1), D (- 1, 0)$ be four points. If $P$ is any other points, then $P A + P B + P C + P D \geq D,$ when $[D]$ is_____, where [.] represents greatest integer.

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Let

A (0, 1) B (1, 1), C (1, - 1), D (- 1, 0)

be four points. If

P

is any other points, then

P A + P B + P C + P D \geq D,

when

[D]

is_____, where [.] represents greatest integer.

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Question Text

Let

A (0, 1) B (1, 1), C (1, - 1), D (- 1, 0)

be four points. If

P

is any other points, then

P A + P B + P C + P D \geq D,

when

[D]

is_____, where [.] represents greatest integer.