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knight247
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If 4/x<1/3 what is the possible range of values for x?
It's a simple problem from the Manhattan Guide. I've figured out the answer as x<0 and x>12 but I am also able to figure that x>-12. Is that correct?
Let me show u how i get it.
Consider x>0
Then 4/x<1/3
can we re written as x>12
Consider x<0
4/x<1/3 can be re written as 12>x.
But also, since x is negative, it can be written as 12>-x
And, multiplying both sides by -1, I get x>-12. So the range of values for x is -12<x<12....
Is my reasoning correct? Thanks
It's a simple problem from the Manhattan Guide. I've figured out the answer as x<0 and x>12 but I am also able to figure that x>-12. Is that correct?
Let me show u how i get it.
Consider x>0
Then 4/x<1/3
can we re written as x>12
Consider x<0
4/x<1/3 can be re written as 12>x.
But also, since x is negative, it can be written as 12>-x
And, multiplying both sides by -1, I get x>-12. So the range of values for x is -12<x<12....
Is my reasoning correct? Thanks
