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junior college 1 | H1 Maths
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Idan Levy
Idan Levy

junior college 1 chevron_right H1 Maths

solution:
0 Or m=1

Date Posted: 6 years ago
Views: 334

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done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Jiayang
Jiayang's answer
1883 answers (Tutor Details)
1st
Ok now your qn is clear
Idan Levy
Idan Levy
6 years ago
Thank you for the solution!
Can you explain why you only did + for x1>4 and - for x2<1?
And also, why didn't you do x1<-2?
Jiayang
Jiayang
6 years ago
Cus the domain of your function is { x ∈ R : x ≥ 0 }
Jiayang
Jiayang
6 years ago
Regarding your first qn...

The "minus" root is definitely the smaller root and vice versa about the "plus" root
Idan Levy
Idan Levy
6 years ago
But why didn't you do the check for it?
It gives a different answer for m.
Jiayang
Jiayang
6 years ago
Check for what?
Jiayang
Jiayang
6 years ago
"minus" <= "plus"
1<4
There's no need to check
Idan Levy
Idan Levy
6 years ago
I understand now, thanks a lot!