Original post by Akhito Kanbara
If x is real , prove that
Difficult, since if x=0, then your rational function equals 1/3 which is greater than 1/13.
Original post by ghostwalker
Difficult, since if x=0, then your rational function equals 1/3 which is greater than 1/13.
so the question is wrong? x is real means that it can be any real number, However,when x=0 is substituted , the range does not apply.
Original post by Akhito Kanbara
so the question is wrong? x is real means that it can be any real number, However,when x=0 is substituted , the range does not apply.
Can't make sense of your last sentence.
x is real means the inequality holds for all real values of x. So, it must hold for x=0; but it doesn't. Hence you're trying to prove something which is actually false - can't be done.
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Ya that s what i am trying to say
Ya that s what i am trying to say
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