- Messages
- 455
- Reaction score
- 7,676
- Points
- 503
Yes, Im getting the same. I believe we are not wrong. There must be a problem with the question. Which year is it?plz help the answer i am getting is 1 / -y ( 1+y )
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)
Yes, Im getting the same. I believe we are not wrong. There must be a problem with the question. Which year is it?plz help the answer i am getting is 1 / -y ( 1+y )
Okay. Waitingyeah !! i am searching for the paper year !! i will tell u
couldn't find .. i hope our answers are correct !yeah !! i am searching for the paper year !! i will tell u
Listen. We are wrong. Why? because if you take note of your solution. You get the limit 1 when x is zero. and limit 0.5 when x is ln2. Observe how the position changes of both the values. Before transformation we have ln2 as the larger limit but when we calcute y we get 1/2 which is the smaller value in the transformation. Therefore, When this happens, The sign of the expression can changecouldn't find .. i hope our answers are correct !
Ohh ! i didnt know about this points . BTW thanks (Y)Listen. We are wrong. Why? because if you take note of your solution. You get the limit 1 when x is zero. and limit 0.5 when x is ln2. Observe how the position changes of both the values. Before transformation we have ln2 as the larger limit but when we calcute y we get 1/2 which is the smaller value in the transformation. Therefore, When this happens, The sign of the expression can change
Ohh ! i didnt know about this points . BTW thanks (Y)
So we just have to put a minus sign in this situation ?!?
Oh no no. You're flipping the limits, right? So the sign will flip as well. Your negative sign will be changed to positive sign and so, You will get the correct transformation.So we just have to put a minus sign in this situation ?!?
Im trying to open the link but its not working for me ...anyways can you please have a look in to that book and lemm know if itcontains the probability using sets and venn diagramsYes, the book is available online, check this website:
http://www.aliensservices.com/E-books.html
As for the solved papers, it's difficult, a mere chance, that they'll be available for S2, very few students choose S2, but I'll search and let you know if I find!
Look. When you have a fraction. And you have to integrate it.View attachment 57680 Can anyone please explain me why the integration of (1/1+y^2) is tan inverse y and how the integration of y/1+y^2 gives .5ln(1+y^2) ???
Also. Is there any substitution given in the question?View attachment 57680 Can anyone please explain me why the integration of (1/1+y^2) is tan inverse y and how the integration of y/1+y^2 gives .5ln(1+y^2) ???
Look. When you have a fraction. And you have to integrate it.
Consider the denominator. differentiate it. If your differentiated expression is the same as your numerator then you can simply use log to integrate. If not then see if you can make it the same by multiplying. For example. In the above case. Your denominator is
1+y^2
Now differentiate it and you will get 2y right? BUT you have only y in numerator. Therefore you will make them same by taking out 1/2 and then simply use log. I hope Im coherent enough for you to understand.
It will become 0.5ln(1+y^2)
If its still not clear then let me know I will try and explain via working step by step.
NO..nothing as such is given in the question.A
Also. Is there any substitution given in the question?
Im trying to open the link but its not working for me ...anyways can you please have a look in to that book and lemm know if itcontains the probability using sets and venn diagrams
yeah please do search..it will surely be a great favour.
For solved past papers, I did search, but they really aren't available online yet...A few sites are updating solved papers, but as I told you, there really is no chance for S2,...I found solved ones for Mechanics, and many other subjects, but no Statistics ....
Probability using venn diagram is explained in the book, but that's only for understanding of 'combined events' and mutually exclusive events etc, but there is no practice for these...it would be better if you have a look at the book yourself... the link doesn't work? works fine for me though..okay try to open this:
http://www.aliensservices.com/A_Level_Books.html
Oh!! try this link:Then isnt there any other book having explaining everything with solved/worked examples ??
the link opens and all I can see is the page loading but not opening.
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