Problem 2:
If $2<f<3$ and $-9<g<-1$, then what is the range of possible values of $fg$?
Rangpur Secondary 2011/2
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- Tahmid Hasan
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Re: Rangpur Secondary 2011/2
for the least value let's take $f$ as tends to $2$ and $g$ as tends to $-9$.so the least possible value of $fg$is tends to $-18$.let's do the same with the highest value.
the range is$-18<fg<-3$
the range is$-18<fg<-3$
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Re: Rangpur Secondary 2011/2
if f=3 and g=-9 then -27<fg<-3
Re: Rangpur Secondary 2011/2
-27<fg<-2..should be.
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Re: Rangpur Secondary 2011/2
Can anyone confirm which one is the correct answer?
Re: Rangpur Secondary 2011/2
The correct answer is $-27 < fg < -2$
Just look out for what the highest and least value of $fg$ can be.
Just look out for what the highest and least value of $fg$ can be.
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