-
We need your support!
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)
Search results
-
Mathematics Paper 13 marking scheme is messed up?!
There are marking schemes that look even worse... idk what's the problem but eh. -
Chemistry: Post your doubts here!
Well, they did say instead of an acid, the only acid in the reactions above is H2SO4... That's the reaction Ba(OH)2 -> BaSO4 -
Mathematics: Post your doubts here!
I'm personally going to take S1, as it has been said to be easier, and would be of great assistance in the field I'm aiming for (In Shaa Allah).. Medicine. As medicine in Uni includes a Bio-statistics course. -
A level Biology: Post your doubts here!
Sorry... I didn't get that the main point of your answer is "mitotically", I thought the point is why they divide in general. Well yes, what you stated seems correct ;) -
A level Biology: Post your doubts here!
Oh yes, but I was forgetting that since this info was only mentioned in our IGCSE syllabus and is not present in the current AS syllabus. The only place where sickle cell is mentioned is in Biological Molecules... As how glutamic acid in the Haemoglobin molecule is replaced with valine... So I... -
A level Biology: Post your doubts here!
1. I don't know why DNA replication is important in general, but in mitosis, it produces genetically identical cells, so daughter cells can carry out the same function as parent cells, and no mutation can occur. 2. B lymphocytes are activated when receptors on it's plasma membrane bind to an... -
Mathematics: Post your doubts here!
Honestly for P1 1hr 45 is plenty. -
Mathematics: Post your doubts here!
Wow... same problem I'm having, I got a bit rusty in functions because I didn't practice for a long time. -
Mathematics: Post your doubts here!
I'm thinking of the same lol... P1 on 7th, and I barely started preparing. I do that by attempting to solve the questions posted here :P -
Mathematics: Post your doubts here!
Now PhyZac obviously explained it far better... So refer to his explanation ;) -
Mathematics: Post your doubts here!
Well here's the explanation... The equation is... 3-2tan(0.5x) Refer it to k+ntan(ax) Now n is -2, in sin and cos curves, this would mean that the curve is switched, and the amplitude is 2, but since tan graphs have no amplitude, we'll just switch it, by switching I mean... This is switched to... -
Mathematics: Post your doubts here!
Take a look at this... http://rechneronline.de/function-graphs/ Enter your formula and you will see the graph... I can't really explain it sorry :( -
Mathematics: Post your doubts here!
Since we're having 3θ ... Then we have to multiply the range by 3, making it 0 < θ < 1080. So we're going 3 cycles around the graph, now our minimum is within the first cycle, and our maximum is within the last cycle... So we start from the beginning of the second cycle, and add 150, our answer... -
Mathematics: Post your doubts here!
I see. Thanks for the explanation. -
Mathematics: Post your doubts here!
2cos^2(nθ) = 2-2sin^2(nθ) 2-2sin^2(nθ) = 3sin(nθ) nθ = 30 or nθ = 150 Smallest value = 10 θ = 10 n(10) = 30 n=3 Now for the largest value, well I don't know, because logically, it would be 50 degrees... because nθ = 150 3θ = 150 θ = 50 <--- But this isn't the correct answer according... -
Mathematics: Post your doubts here!
Since it is smooth, there is no loss of energy because there is no friction, so potential energy is directly converted to kinetic energy. Gain in potential energy = Loss in kinetic energy. So as it goes down from A to B, it loses P.E. and gains K.E., when it goes up to C, it gains the lost P.E... -
Chemistry: Post your doubts here!
Oops, It's C, was my second choice. LOL No idea why though.. (n) -
-
Mathematics: Post your doubts here!
Lol.... i don't think it's possible to show a graph here :D Unless we draw it scan etc... :sleep: -
A level Biology: Post your doubts here!
NP :P but even in humans, glucose isn't converted to sucrose, it's carried as it is.