Prachi Kashyap posted an Question
February 03, 2022 • 17:01 pm 30 points
  • IIT JAM
  • Mathematics (MA)

49. a = {ke r:x* -12x + k = 0 has two real roots in-1, 1 then cardinality of a is

49. A = {ke R:x* -12x + k = 0 has two real roots in-1, 1 then cardinality of A is

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    Piyush pachauri best-answer

    Ans is 0. If f(x) has 2 roots in interval it implies f'(x) has atleast 1 root in interval which is not possible.

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