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# make subject

Maths and statistics discussion, revision, exam and homework help.

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1. make subject
hi can someone tell me how to make t the subject

x=t/2t-3
2. Re: make subject
(Original post by otrivine)
hi can someone tell me how to make t the subject

x=t/2t-3
I presume you mean x=t/(2t-3), if so multiply by 2t-3 and you get x(2t-3) =t

Expand the bracket and collect t on the lefthand side. Factorise etc
3. Re: make subject
(Original post by otrivine)
hi can someone tell me how to make t the subject

x=t/2t-3

Is it

Its better that you learn LaTex.
4. Re: make subject
(Original post by raheem94)

Is it

Its better that you learn LaTex.
yes thats the equation
yes i want to but i dont think my computer has that
5. Re: make subject
(Original post by otrivine)
yes thats the equation
yes i want to but i dont think my computer has that
See the below link to learn LaTex:
http://www.thestudentroom.co.uk/wiki/LaTex

Its not something that you need to install on computer.

Mulitply both sides by (2t-3),
6. Re: make subject
(Original post by otrivine)
yes thats the equation
yes i want to but i dont think my computer has that
It's not something your computer needs to 'have'. It's built into the forum post editor. You just write (latex) and (/latex) (except use square brackets [] instead of round brackets () ) at the beginning and end of the latex you're writing.

There's a guide here on how to write various things:

http://www.thestudentroom.co.uk/wiki/LaTex

Anyway. For this question you first want to get rid of the fraction so what must you do?
7. Re: make subject
(Original post by otrivine)
hi can someone tell me how to make t the subject

x=t/2t-3
Don't mind, a few minutes ago you were doing C3 trig, now you are doing O-Level rearranging. Maths shouldn't be learnt in this way, you should first strengthen your basics before moving forward.
8. Re: make subject
(Original post by raheem94)

Is it

Its better that you learn LaTex.

It would be OK if people could use BRACKETS. In this case one pair of brackets is all that is needed.

x = t/(2t-3)
9. Re: make subject
(Original post by raheem94)
Don't mind, a few minutes ago you were doing C3 trig, now you are doing O-Level rearranging. Maths shouldn't be learnt in this way, you should first strengthen your basics before moving forward.
no i finished revising trig now for c3 and i understand there are 3 questions i want my teahcer to go over and now i am revising c4 Cartesian equations

tell me now if this is bad revision technique?
10. Re: make subject
(Original post by hassi94)
It's not something your computer needs to 'have'. It's built into the forum post editor. You just write (latex) and (/latex) (except use square brackets [] instead of round brackets () ) at the beginning and end of the latex you're writing.

There's a guide here on how to write various things:

http://www.thestudentroom.co.uk/wiki/LaTex

Anyway. For this question you first want to get rid of the fraction so what must you do?
get rid by multiplying the equation and factorising it?
11. Re: make subject
(Original post by otrivine)
get rid by multiplying the equation and factorising it?
Yep. So try that and show is your working (or just your answer if you're confident you can get it now).
12. Re: make subject
(Original post by otrivine)
no i finished revising trig now for c3 and i understand there are 3 questions i want my teahcer to go over and now i am revising c4 Cartesian equations

tell me now if this is bad revision technique?
My technique is different.

I self-study maths. I first finish one module, chapter wise, then move on to the next. What i mean by 'finish' is that i try to completely understand it, so that i don't need to do past papers. Then on the day before the exam i just go through the examples in the book again, and do 1-2 past paper.
13. Re: make subject
(Original post by raheem94)
Don't mind, a few minutes ago you were doing C3 trig, now you are doing O-Level rearranging. Maths shouldn't be learnt in this way, you should first strengthen your basics before moving forward.
I think this is part of C4 Parametric Equations. But I do agree this part of parametric should be going back to basics; but from my experience with other students in my school many people find rearranging the equation quite difficult (even though it should've been extensively covered at GCSE).
14. Re: make subject
(Original post by steve2005)
It would be OK if people could use BRACKETS. In this case one pair of brackets is all that is needed.

x = t/(2t-3)
This question can easily be made clear by using brackets, unfortunately most people don't care to use brackets.

LaTex doesn't takes much time to understand, so it is worth to have a go in learning it. The basics of LaTex can easily be mastered in an hour.
15. Re: make subject
(Original post by hassi94)
Yep. So try that and show is your working (or just your answer if you're confident you can get it now).
so is this correct so far 2tx-3x=t
16. Re: make subject
(Original post by hassi94)
I think this is part of C4 Parametric Equations. But I do agree this part of parametric should be going back to basics; but from my experience with other students in my school many people find rearranging the equation quite difficult (even though it should've been extensively covered at GCSE).
Most people tend to leave many parts of the chapter while learning, i really don't like this way.

If a person goes through each and every point in the chapter, then he won't have such difficulties. Rearranging is something that you start learning in year 8, so when a person comes in A-Level i don't think he should have any problem with this.
17. Re: make subject
(Original post by otrivine)
so is this correct so far 2tx-3x=t
Yes.
18. Re: make subject
(Original post by otrivine)
so is this correct so far 2tx-3x=t
Yes
19. Re: make subject
(Original post by raheem94)
Most people tend to leave many parts of the chapter while learning, i really don't like this way.

If a person goes through each and every point in the chapter, then he won't have such difficulties. Rearranging is something that you start learning in year 8, so when a person comes in A-Level i don't think he should have any problem with this.
i appreciate you are helping me but i am doing all the exercise from c4 book and i am getting correct it is this one i am stuck and TSR is the best place for help.
20. Re: make subject
(Original post by hassi94)
Yes.
then i factorize so x(2t-3)=t
correct?

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Last updated: May 3, 2012
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