# C3 Modulus 5 Marker Exam Question? (OCR) Help :(

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#1

The highlighted question is the one I don't understand. (comes from the June 2016 OCR C3 maths paper)

I went through this question with the mark scheme too, and I still don't understand the correct way of answering this question.

What is the correct way of answering this question? Thank you.
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3 years ago
#2
(Original post by ZiggyStardust_)

The highlighted question is the one I don't understand. (comes from the June 2016 OCR C3 maths paper)

I went through this question with the mark scheme too, and I still don't understand the correct way of answering this question.

What is the correct way of answering this question? Thank you.
What's confusing?

means which is hence

Equating this to we get then just solve for
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3 years ago
#3
Modulus can be + or - so x is either 1.5a or -2.5a.
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#4
(Original post by RDKGames)
What's confusing?

means which is hence

Equating this to we get then just solve for
i solved for x using that method and got the wrong answer...
0
3 years ago
#5
(Original post by ZiggyStardust_)
i solved for x using that method and got the wrong answer...
Then you must've tripped up in your working.
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#6
(Original post by MsMode)
Modulus can be + or - so x is either 1.5a or -2.5a.
that's what it said in the mark scheme yeah. but i got 2 completely different answers
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3 years ago
#7
(Original post by ZiggyStardust_)
that's what it said in the mark scheme yeah. but i got 2 completely different answers
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#8
(Original post by Notnek)
(Original post by RDKGames)
Then you must've tripped up in your working.
after inspecting my work again, i realise i've made some rlly dumb errors, yeah.
very silly.

but thank u anyhow!
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3 years ago
#9
(Original post by ZiggyStardust_)
that's what it said in the mark scheme yeah. but i got 2 completely different answers
So are you answers were wrong or do you want me to post my workings?
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