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Question

Mathematics Question on Set Theory

Which of the following set is convex?

A

(x,y):x2+y2≥1\\{(x, y): x^2 + y^2 ≥1\\}

B

(x,y):y2≥x\\{(x,y): y^2≥x\\}

C

(x,y):3x2+4y2≥5\\{(x, y): 3x^2+4y^2≥5\\}

D

(x,y):y≥2,y≤4\\{(x,y): y≥2, y≤4\\}

Answer

(x,y):y≥2,y≤4\\{(x,y): y≥2, y≤4\\}

Explanation

Solution

The correct option is(D)