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Question

Question: Minimum value of 12x + 5y + 6, when x<sup>2</sup> + y<sup>2</sup> = 4, is...

Minimum value of 12x + 5y + 6, when x2 + y2 = 4, is

A

7

B

– 20

C

0

D

) 20

Answer

– 20

Explanation

Solution

Put x = 2 cos q, y = 2sin q