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Re: x ≥ -1 and x ≥ x^5 [#permalink]
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Carcass wrote:
Hi,

your explanation is quite good. However, I do not understand the meaning of usage of the spoiler tag and not a straight explanation.

regards


I wanted to give readers the opportunity to solve on their own with gentle hints before giving the answer. That's generally how I would teach that problem in a tutoring session.

However, when I kept reading posts, I realized I was the only one doing that, so now I'd limit that to weird solutions or additional thoughts about a question on this forum.
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Re: x ≥ -1 and x ≥ x^5 [#permalink]
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The answer is B.

The key word is must be. i.e equation holds true for all values of x in the range.
x≥−1
x≥x5
Checking x = 0 , T T
Checking x=1 , T T
Checking x= -1, T T
Checking x=2, T F -- option A,D is eliminated
Checking x= 1/2 , T T
Checking x=-1/2 ,T F -- option C is eliminated

B holds true
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Re: x -1 and x x^5 [#permalink]
Hello from the GRE Prep Club BumpBot!

Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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