IIT JAM
Shashank Asked a Question
November 24, 2020 2:23 pmpts 30 pts
  • IIT JAM
  • Mathematics (MA)

If f(x) = x sin x for all x belong to r then f: r-> r is (a) bounded above (b) not bounded above (c) bounded below (d) not bounded below

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  • Satpal singh Best Answer
    see the attachment
    • cropped3578149968476185149.jpg
    Likes(1) Reply(3)
    Vijay Singh chauhan
    Satpal sir how did you know that if you multiply the inequality the inequality doesn't change because "x" could be + or -?
  • Deepak singh thankyou
    any doubt ??
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  • Deepak singh
    not bounded above nor bounded below .. option b and d are correct
    • cropped880539785551490785.jpg
    Likes(2) Reply(0)
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