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Chemistry: Post your doubts here!
They didn't say accept any :( and it's a diol btw, what I drew. Oh and I googled it, and found it :D :D :D http://www.chemspider.com/Chemical-Structure.4528353.html -
Chemistry: Post your doubts here!
Question guys.. C4H8O2 contains C=C and OH ... Two types of steroisomerism exist for this compound... Draw the displayed formula of both pairs of isomers ( 4 compounds ) One is cis-trans... This is the marking scheme's answer This is my answer: ( i was too lazy to draw the trans in... -
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Pure Mathematics 1.... AS students only
Question 3 was easy for me... Question 7 i knew the idea but I didn't have time, so I wrote some working. Also, I left out another 2 mark question. So I'm pretty much in bad shape. I hope mechanics can make up for it. -
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Mathematics: Post your doubts here!
I got it... The limits of the graph of cos^2x are 0 --> 1 multiply both sides by -4 0 ---> -4 ,,,, since 0 is greater than -4 u flip it -4 ----> 0 add 3 - 1 ---> 3 -
Mathematics: Post your doubts here!
I couldn't solve 9 i (a) when i tried to solve this paper before. But 9 i (b) is easy... just equate it to 1 and solve. -
Mathematics: Post your doubts here!
PhyZac solved this question before, search this thread for it. -
Mathematics: Post your doubts here!
It's mandatory if the domain is given in radians... like 0 < x < pi. It clearly says in the ms, must be in radian. 1.5 hrs left for my exam, terrified here. -
Chemistry: Post your doubts here!
C1V1 = C2V2 is only used when the number of moles before and after (1 -> 2) is equal, but concentration and volume change. -
Mathematics: Post your doubts here!
Nope lol... I'm hoping one of my classmates can explain it to me tomorrow. -
Mathematics: Post your doubts here!
Now why is Vice City on your Task Bar :D Supposed to be exam time :P Anyway.. the midpoint of AC is equal to the midpoint of DB, as diagonals bisect each other. I think you can figure out the rest. -
Mathematics: Post your doubts here!
Yes! Got it. Thanks a lot. (y) -
Mathematics: Post your doubts here!
Yes I do get the tan(pi-x)... But not the tan(0.5pi-x) -
Mathematics: Post your doubts here!
Wow really? :D Too bad I can't make such conclusions in an exam, I get so tense. -
Mathematics: Post your doubts here!
I think I understand tan(pi-x) = -tanx in relation to the graph... Is it because every pi units the graph is upside down, like at tan(x) it would be going up and at tan(pi-x) it would be going down. Just a logical guess. :p -
Mathematics: Post your doubts here!
Honestly I don't get it fully. I get that tanx = ab/bc (duh! :ROFLMAO: ) But further.. not really. -
Mathematics: Post your doubts here!
Nature of the stationary point*. -
Mathematics: Post your doubts here!
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20%289709%29/9709_s10_qp_11.pdf Question 1, all of it. -