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Let a, b, x, y be real numbers such that a^2 + b^2 = 81, x^2 + y^2 = 121 and ax + by = 99.

+2 votes
in Class 12 by kratos

Let a, b, x, y be real numbers such that a2 + b2 = 81, x2 + y2 = 121 and ax + by = 99. Then the set of all possible values of ay – bx is -

(A) (0, 9/11)

(B) (0, 9/11)

(C) (0)

(D) (9/11, ∞)

1 Answer

+4 votes
by kratos
 
Best answer

Correct option (C) {0}

Explanation:

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