- Messages
- 81
- Reaction score
- 71
- Points
- 28
i need maths core revision guide can any1 help me in tht??
We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
HI, I was practicing some math past papers and Iam stuck on Q17 summer 2007 http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s07_qp_2.pdf please I need help ASAP! Thank you
dude 2^3 = 8 (2*2*2) you can try it using a calculator. You really need to study indices mate.Thanks for the replay but may I ask u how did u know that 1/(2^3) = 1/8 :s
Look the easiest way to think of it is this way:Hey guys, I am having a question in MJ 06 Paper 2, question 14. Here is the link:
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s06_qp_2.pdf
The question is:
14 A company makes two models of television.
Model A has a rectangular screen that measures 44 cm by 32 cm.
Model B has a larger screen with these measurements increased in the ratio 5:4.
(a) Work out the measurements of the larger screen.
How can I get the measurements of the larger screen?
Thanks a lot! You made it so simple for me.Look the easiest way to think of it is this way:
5:4= 5/4 . so when you multiply 5/4 * each measurement it will give you the larger measurement.
5/4 * 44 = 55
5/4 * 32 = 40
Ok... When you are dealing with functions and you want the inverse of a function (i.e : 5-3x) , you have to do the following :Can some one help me in question number 15 (b):
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w06_qp_2.pdf
f: x I----------> 5 − 3x
(b) Find f^-1(x)
Grade 10 lol. Doing my final IGCSE this year.Ok... When you are dealing with functions and you want the inverse of a function (i.e : 5-3x) , you have to do the following :
1- change f:x into Y. So it will be y=5-3x
2-make x the subject : y-5=3x(moved 5 to the other side )
so x= y-5/3
3- Final step is change x to F^-1 (x) (the letter doesn't have to be F it can vary according to the question) , and change any x's into Y.
So here the answer will be F^-1 (x) = x-5/3
Btw what grade are you, i am assuming you are pre-IG right?
Shouldn't it be y-5=-3x?Ok... When you are dealing with functions and you want the inverse of a function (i.e : 5-3x) , you have to do the following :
1- change f:x into Y. So it will be y=5-3x
2-make x the subject : y-5=3x(moved 5 to the other side )
Oh yeah lol , u are right , srry i am a bit sick todayShouldn't it be y-5=-3x?
My good friend, I already know all of this function calculations. I even answered exactly what you just did.But dude btw you should be knowing functions and these stuff before going into the exam. I suggest you give a quick look into math notes
For almost 10 years, the site XtremePapers has been trying very hard to serve its users.
However, we are now struggling to cover its operational costs due to unforeseen circumstances. If we helped you in any way, kindly contribute and be the part of this effort. No act of kindness, no matter how small, is ever wasted.
Click here to Donate Now