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Most Important Selected Qs for JEE AdvancedMathematicsDeterminants

Let A= | array lll a & b & c b & c & a c & a & b array | such that |A|=0 . If a, b, c are distinct, then the sum of the coordinates of the fixed point through which the line a x+b y+c=0 passes is

Options

  1. A2
  2. B3
  3. C4
  4. D5

Correct answer

A. 2

Step-by-step solution

A upon simplification (a+b+c)(a-b)(b-c)(c-a) The only way this can be 0 is (a+b+c)=0 fixed point is (1,1)

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