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secondary 3 | E Maths
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LockB
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secondary 3 chevron_right E Maths chevron_right Singapore

need help with b, pls teach me how to do also
is there any formula for this kind of qn too?

Date Posted: 4 years ago
Views: 184
Boy Mow Chau
Boy Mow Chau
4 years ago
… the working for part (a) written in pencil …
did you do it by yourself?
… the working and answer are correct!

for part(b), it says "... hence ...". this means that you need to use the result from the previous part. the "magic formula" that you need is what is written as the answer for part (a).

you have -1.5 < q <=2. you need to think of the integers within this range. try and write them out (there are exactly 4 of them). draw a number line if you need. which of this integer has the lowest value? that is your answer!
LockB
LockB
4 years ago
but theres only 0,1 and 2 tho, why is -1 included in the range
Boy Mow Chau
Boy Mow Chau
4 years ago
… integers can be positive & negative.

remember that the integer numbers go like ...
… -4, -3, -2, -1, 0, 1, 2, 3, 4 …

… -1 is greater than -1.5 …

… so for -1.5 < q <=2, the 4 integers that are in the range are -1, 0 , 1, 2. and the one with the lowest value is -1.
LockB
LockB
4 years ago
ok,, thanks a lot for your help :)

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Shahanaj Begum
Shahanaj Begum's answer
12 answers (Tutor Details)
1st
The smallest integer, q = -1.

-1 is a whole number which is greater than -1.5 and less than 2