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Which of the following sets are not conv...

Which of the following sets are not convex? A) `{(x,y):8x^2+6y^2leq24}` B) `{(x,y): 6 leq x^2+y^2 leq 36}` C) `{(x,y): ygeq3, ygeq 30}` D) `{(x,y): x^2leqy}`

A

` { x , y ): 8x^2 + 6y^2 le 24 }`

B

`{(x,y ) : 6 le x ^2 +y^2 le 36 }`

C

`{(x,y) : y ge 3, y ge 30 }`

D

` {( x,y ): x^2 le y}`

Text Solution

Verified by Experts

The correct Answer is:
B
`{( x, y): 6 le x^2 +y^2 le 36} `

Form figure (graph ), it is clear that it is not convex .
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