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heromilesBest ResponseYou've already chosen the best response.0
multiply both sides by the denominator
 2 years ago

amoghBest ResponseYou've already chosen the best response.2
you cannot do that as 1x can be negative, You can do that be wavy curve method, Or common sense, If a ratio has to be +ve, both numerator n denominator have to be of the same sign, 1+x >0 , x>1 1x >0 , x<1 common soln. (1,1) 1+x<0 , x<1 1x<0 , x>1 common soln. (nothing!) Therefore, the ans is (1,1)
 2 years ago

joemath314159Best ResponseYou've already chosen the best response.0
if you multiply both sides by the denominator you would get 1 + x > 0(1  x) which is 1 +x > 0
 2 years ago

heromilesBest ResponseYou've already chosen the best response.0
For some reason, I have to do this on paper, not in my head
 2 years ago

satellite73Best ResponseYou've already chosen the best response.0
you cannot multiply both sides by a variable in an inequality
 2 years ago

amoghBest ResponseYou've already chosen the best response.2
@satellite: you can if you know that its gonna be +ve or ve
 2 years ago

Alexis1994_13Best ResponseYou've already chosen the best response.0
I guess amogh it's right. Thanks guys.
 2 years ago

satellite73Best ResponseYou've already chosen the best response.0
your answer is all numbers between 1 and 1 i.e. (1,1)
 2 years ago

joemath314159Best ResponseYou've already chosen the best response.0
Satellite and amogh have the right idea.
 2 years ago

heromilesBest ResponseYou've already chosen the best response.0
I neglected to use critical points and the intervals between them
 2 years ago

satellite73Best ResponseYou've already chosen the best response.0
and it is easy enough to solve. for one thing you can just think of \[(1+x)(1x)> 0\] which is a parabola facing down. therefore it is positive between the zeros and negative outside of them. the zeros are 1 and 1 so it is positive between those two numbers and negative outside of them
 2 years ago

Alexis1994_13Best ResponseYou've already chosen the best response.0
Very usefull site! Thank ya all :)
 2 years ago

satellite73Best ResponseYou've already chosen the best response.0
or you can say you have two factors , 1+x which is positive if x > 1 negative for x < 1 1x which is positive if x < 1 and negative is x > 1 then what happens when you divide? if you are between 1 and 1 both are positive, and so the quotient will be as well
 2 years ago
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