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
Minimum value of 12x + 5y + 6, when x2 + y2 = 4, is
7
– 20
0
) 20
– 20
Put x = 2 cos q, y = 2sin q