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KCET2015MathematicsDifferential Equations

Write the set builder form ( A= -1,1 : )

Options

  1. A( A= x: x ) is a real number ( )
  2. B( A= x: x ) is an integer ( )
  3. C( A= x: x . ) is a root of the equation ( .x²=1 )
  4. D( A= x: x . ) is a root of the equation ( .x²+1=0 )

Correct answer

C. ( A= x: x . ) is a root of the equation ( .x²=1 )

Step-by-step solution

Given that, A=- 1,1 From option (3), x²=1 x= 1 Therefore, A= x: x . is a root of the equation .x²=1

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