Turquoise_96 Posted November 16, 2013 Report Share Posted November 16, 2013 Does anyone remember their answers for paper 2 the last part of Q8? It's the question on the length of arc ABC. Reply Link to post Share on other sites More sharing options...
sarah:) Posted November 16, 2013 Report Share Posted November 16, 2013 Does anyone remember their answers for paper 2 the last part of Q8? It's the question on the length of arc ABC. I used the cosine rule to work out the angles (and the radius for both sectors was 7) and then calculated the length of the arc for each of the two sectors and added them .. to get 23 or something .. honestly I totally forgot the answer... it was in the twenties for sure.. but I forgot the exact value.... if you know the answer.. maybe it'll click again Reply Link to post Share on other sites More sharing options...
Turquoise_96 Posted November 16, 2013 Report Share Posted November 16, 2013 Does anyone remember their answers for paper 2 the last part of Q8? It's the question on the length of arc ABC. I used the cosine rule to work out the angles (and the radius for both sectors was 7) and then calculated the length of the arc for each of the two sectors and added them .. to get 23 or something .. honestly I totally forgot the answer... it was in the twenties for sure.. but I forgot the exact value.... if you know the answer.. maybe it'll click again yes that was exactly what I did! I got 25.something.. sorry can't remember the exact decimal places Reply Link to post Share on other sites More sharing options...
g_ar Posted November 16, 2013 Report Share Posted November 16, 2013 Does anyone remember their answers for paper 2 the last part of Q8? It's the question on the length of arc ABC. i got 23.1 but i found the length by subtracting the circumference of the semi-circle with diameter 13.3 from the circumference of the whole circle with radius 7. Reply Link to post Share on other sites More sharing options...
DiegoA Posted November 17, 2013 Report Share Posted November 17, 2013 Yeah, Paper 1 was pretty good! I agree with all of you .. it was harder than previous years.Paper 2, however, was a bit more tricky... it tested our understanding of concepts.. we really had to know our stuff..I got n=8 for the last question about probability too!! yay!for the vectors... I got from memory.. -1,0,-18 (something like that, I forgot)OVERALL. the ugliest question for me in both papers was question 7 of paper 2 (the semi-circle) the second-half of it.... didn't really make sense.... I just stared at that page for a good twenty minutes... hoping for something to click... but yeah ... no.. nothing.HOPE WE ALL DO WELL!GOOD LUCK FOR THOSE WHO ARE STILL DOING EXAMS!and all you guys who've finished exams .. good luck with the results January 4-5 will be the scariest moment of our livesss.. The base of the rectangle was 6-2x and the height was the function itself (I am not explaining why because I am assuming you correctly did the first part of the question based on what you said)The "second part" (certainly the question that was worth the most points I think) was giving the range of values "X" could take in order for the area of the rectangle to be increasing. You had to graph the function f(x)=base*height, which gave you a grade 3 function, clearly decreasing in a certain range. You just had to write the range of values for which the graph was decreasing 2 Reply Link to post Share on other sites More sharing options...
Sammy Posted November 17, 2013 Report Share Posted November 17, 2013 The base of the rectangle was 6-2x and the height was the function itself (I am not explaining why because I am assuming you correctly did the first part of the question based on what you said)The "second part" (certainly the question that was worth the most points I think) was giving the range of values "X" could take in order for the area of the rectangle to be increasing. You had to graph the function f(x)=base*height, which gave you a grade 3 function, clearly decreasing in a certain range. You just had to write the range of values for which the graph was decreasing Wish it was that easy during the examm.... 1 Reply Link to post Share on other sites More sharing options...
g_ar Posted November 17, 2013 Report Share Posted November 17, 2013 (edited) Yeah, Paper 1 was pretty good! I agree with all of you .. it was harder than previous years.Paper 2, however, was a bit more tricky... it tested our understanding of concepts.. we really had to know our stuff..I got n=8 for the last question about probability too!! yay!for the vectors... I got from memory.. -1,0,-18 (something like that, I forgot)OVERALL. the ugliest question for me in both papers was question 7 of paper 2 (the semi-circle) the second-half of it.... didn't really make sense.... I just stared at that page for a good twenty minutes... hoping for something to click... but yeah ... no.. nothing.HOPE WE ALL DO WELL!GOOD LUCK FOR THOSE WHO ARE STILL DOING EXAMS!and all you guys who've finished exams .. good luck with the results January 4-5 will be the scariest moment of our livesss.. The base of the rectangle was 6-2x and the height was the function itself (I am not explaining why because I am assuming you correctly did the first part of the question based on what you said)The "second part" (certainly the question that was worth the most points I think) was giving the range of values "X" could take in order for the area of the rectangle to be increasing. You had to graph the function f(x)=base*height, which gave you a grade 3 function, clearly decreasing in a certain range. You just had to write the range of values for which the graph was decreasing did you get a=2 and b=5.96 for the range in which the area was decreasing ? Edited November 17, 2013 by g_ar Reply Link to post Share on other sites More sharing options...
sarah:) Posted November 17, 2013 Report Share Posted November 17, 2013 I put a = 2 as a guess.. so hopefully I can get a mark :PThanks DiegoA for the explanation just 4 marks it's alright.. there's still a chance for a seven hopefully. 1 Reply Link to post Share on other sites More sharing options...
g_ar Posted November 17, 2013 Report Share Posted November 17, 2013 I put a = 2 as a guess.. so hopefully I can get a mark :PThanks DiegoA for the explanation just 4 marks it's alright.. there's still a chance for a seven hopefully.haha yeahh i think a=2 is right.....yeahh hopefully, i have high hopes the grade boundaries will be lower for this year's maths papers 1 Reply Link to post Share on other sites More sharing options...
DanielB Posted November 21, 2013 Report Share Posted November 21, 2013 Replaced -1 in the last vectorial equationI think it was not like thatThe distance between Q and P has to be the same between P and R--> --> QP = PRThere you got the answer(don't remember well the points sorry) Reply Link to post Share on other sites More sharing options...
khimberleigh Posted November 21, 2013 Report Share Posted November 21, 2013 I think I did something like that too ^^Did you get a messy answer, with lots of decimal places (not a nice whole number)? I don't remember exactly what I got either Reply Link to post Share on other sites More sharing options...
sarah33 Posted December 9, 2013 Report Share Posted December 9, 2013 what did you guys think of paper 2 overall? which questions were the hardest? Reply Link to post Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.