Klauu Posted May 13, 2015 Report Share Posted May 13, 2015 Does anyone remember the answer for #7 TZ2? (the fair game question) I got 25 dollar. What about you? I thought it was pretty hard exam...specially the last question. Whole question 10 was horrible... 3 Reply Link to post Share on other sites More sharing options...
thepositiveclub Posted May 13, 2015 Report Share Posted May 13, 2015 Does anyone remember the answer for #7 TZ2? (the fair game question) I got 25 dollar. What about you? I thought it was pretty hard exam...specially the last question. Whole question 10 was horrible... I got the same answer, hope its correct.. :3 1 Reply Link to post Share on other sites More sharing options...
Klauu Posted May 13, 2015 Report Share Posted May 13, 2015 Does anyone remember the answer for #7 TZ2? (the fair game question) I got 25 dollar. What about you? I thought it was pretty hard exam...specially the last question. Whole question 10 was horrible... Let´s hope..What did you get on the vector question asking for the speed? Reply Link to post Share on other sites More sharing options...
thepositiveclub Posted May 13, 2015 Report Share Posted May 13, 2015 Does anyone remember the answer for #7 TZ2? (the fair game question) I got 25 dollar. What about you? I thought it was pretty hard exam...specially the last question. Whole question 10 was horrible... Let´s hope.. What did you get on the vector question asking for the speed? Can't remember my answer for that one , what about you? Reply Link to post Share on other sites More sharing options...
Klauu Posted May 13, 2015 Report Share Posted May 13, 2015 Does anyone remember the answer for #7 TZ2? (the fair game question) I got 25 dollar. What about you? I thought it was pretty hard exam...specially the last question. Whole question 10 was horrible... Let´s hope.. What did you get on the vector question asking for the speed? Can't remember my answer for that one , what about you? something really stupid..:/ square root 224 or something strange number Reply Link to post Share on other sites More sharing options...
Maha Posted May 13, 2015 Report Share Posted May 13, 2015 I think it was not hard, but I did some stupid mistakes :/. Reply Link to post Share on other sites More sharing options...
dorianb Posted May 13, 2015 Report Share Posted May 13, 2015 (edited) Yeah, question 10 was the hardest by far, but I eventually cracked it (phew)What was the answer? Do you remember ?I got f(0) = 8.5 The area underneath the graph was the area from x=a to x=0, minus the area from x=0 to x=d, since that area would turn out to be negative as it was below the x-axis. Hence, integral of f'(x) = f(x) + c. Integral with upperlimit as 0, and lower limit as a, = f(0) - f(a) = f(0) - 3 The other area would be the integral of f'(x) with upper limit as d and lower as 0. Hence, f(d) - f(0) = -1 - f(0) I represent f(0) as x, so total area would be x-3 - (-1-x) = x-3+1+x = 2x -2 = 15 Hence, 2x = 17, and x = 8.5, so f(0) = 8.5 Does anyone remember the answer for #7 TZ2? (the fair game question) I got 25 dollar. What about you? I thought it was pretty hard exam...specially the last question. Whole question 10 was horrible... Let´s hope.. What did you get on the vector question asking for the speed? Can't remember my answer for that one , what about you? something really stupid..:/ square root 224 or something strange number I got the square root of 3... Since if I remember correctly, the direction vector was (1, 1, 1) so the magnitude, which is used to find the speed, would be square root 1^2 + 1^2 + 1^2, equalling square root of 3... Edited May 13, 2015 by dorianb 1 Reply Link to post Share on other sites More sharing options...
dorianb Posted May 13, 2015 Report Share Posted May 13, 2015 Does anyone remember the answer for #7 TZ2? (the fair game question) I got 25 dollar. What about you? I thought it was pretty hard exam...specially the last question. Whole question 10 was horrible... I got the same answer, hope its correct.. :3 Yeah, I got 25 as well Reply Link to post Share on other sites More sharing options...
Klauu Posted May 13, 2015 Report Share Posted May 13, 2015 Yeah, question 10 was the hardest by far, but I eventually cracked it (phew)What was the answer? Do you remember ?I got f(0) = 8.5 The area underneath the graph was the area from x=a to x=0, minus the area from x=0 to x=d, since that area would turn out to be negative as it was below the x-axis. Hence, integral of f'(x) = f(x) + c. Integral with upperlimit as 0, and lower limit as a, = f(0) - f(a) = f(0) - 3 The other area would be the integral of f'(x) with upper limit as d and lower as 0. Hence, f(d) - f(0) = -1 - f(0) I represent f(0) as x, so total area would be x-3 - (-1-x) = x-3+1+x = 2x -2 = 15 Hence, 2x = 17, and x = 8.5, so f(0) = 8.5 Does anyone remember the answer for #7 TZ2? (the fair game question) I got 25 dollar. What about you? I thought it was pretty hard exam...specially the last question. Whole question 10 was horrible... Let´s hope.. What did you get on the vector question asking for the speed? Can't remember my answer for that one , what about you? something really stupid..:/ square root 224 or something strange number I got the square root of 3... Since if I remember correctly, the direction vector was (1, 1, 1) so the magnitude, which is used to find the speed, would be square root 1^2 + 1^2 + 1^2, equalling square root of 3... Probably it was the right answer, but I messed it up Reply Link to post Share on other sites More sharing options...
IbTrojan Posted May 13, 2015 Report Share Posted May 13, 2015 (edited) Hi there! what do you think about math paper 1 2015 the last question ?I suppose you refer to the TZ1, as I am in TZ1 too! The long probability one, right? Well I was really lucky as our teacher did a similar type question in our last session. It was taken from the HL examinations, and the solution about the probability of Ann winning the game was found through the sum of infinity, as it was a geometric series.Oh crap I totally lost out on that question then Anyone from TZ 1 here? Edited May 13, 2015 by IbTrojan 2 Reply Link to post Share on other sites More sharing options...
IB . Posted May 13, 2015 Report Share Posted May 13, 2015 I'm from TZ1! I thought the exam was pretty challenging. Specifically that last question which was worth 8 marks. Reply Link to post Share on other sites More sharing options...
IbTrojan Posted May 13, 2015 Report Share Posted May 13, 2015 8? I thought it was worth 7...the one about Ann, right? I didn't realize it was geometric. I was so stuck on trying to figure out which probability concept to use that I didn't consider it was from another unit 1 Reply Link to post Share on other sites More sharing options...
2to10 Posted May 13, 2015 Report Share Posted May 13, 2015 8? I thought it was worth 7...the one about Ann, right? I didn't realize it was geometric. I was so stuck on trying to figure out which probability concept to use that I didn't consider it was from another unit I knew it was geometric when it told us to find k and r in (3/8)r^k, which takes on the form of a geometric sequence. I still got it wrong though. What did people put for k and r? Reply Link to post Share on other sites More sharing options...
IbTrojan Posted May 13, 2015 Report Share Posted May 13, 2015 8? I thought it was worth 7...the one about Ann, right? I didn't realize it was geometric. I was so stuck on trying to figure out which probability concept to use that I didn't consider it was from another unit I knew it was geometric when it told us to find k and r in (3/8)r^k, which takes on the form of a geometric sequence. I still got it wrong though. What did people put for k and r? I'm totally screwed for math. Just saw my future go down the drain Reply Link to post Share on other sites More sharing options...
DaniaKharraz Posted May 13, 2015 Report Share Posted May 13, 2015 Does anyone remember the answer for #7 TZ2? (the fair game question) I got 25 dollar. What about you?I thought it was pretty hard exam...specially the last question. Whole question 10 was horrible... I got the same answer, hope its correct.. :3 Actually it's not . You can never win your money back and the additional profit in a betting game ( which it was) . I opened a betting calculator after the exam , the answer was plain 15 Reply Link to post Share on other sites More sharing options...
AnonymousGlassesIB Posted May 13, 2015 Report Share Posted May 13, 2015 Yeah, question 10 was the hardest by far, but I eventually cracked it (phew)What was the answer? Do you remember ?I got f(0) = 8.5 The area underneath the graph was the area from x=a to x=0, minus the area from x=0 to x=d, since that area would turn out to be negative as it was below the x-axis. Hence, integral of f'(x) = f(x) + c. Integral with upperlimit as 0, and lower limit as a, = f(0) - f(a) = f(0) - 3 The other area would be the integral of f'(x) with upper limit as d and lower as 0. Hence, f(d) - f(0) = -1 - f(0) I represent f(0) as x, so total area would be x-3 - (-1-x) = x-3+1+x = 2x -2 = 15 Hence, 2x = 17, and x = 8.5, so f(0) = 8.5 Does anyone remember the answer for #7 TZ2? (the fair game question) I got 25 dollar. What about you? I thought it was pretty hard exam...specially the last question. Whole question 10 was horrible... Let´s hope.. What did you get on the vector question asking for the speed? Can't remember my answer for that one , what about you? something really stupid..:/ square root 224 or something strange number I got the square root of 3... Since if I remember correctly, the direction vector was (1, 1, 1) so the magnitude, which is used to find the speed, would be square root 1^2 + 1^2 + 1^2, equalling square root of 3... Probably it was the right answer, but I messed it up No, I got root 224 as well. What did you get for m again? Reply Link to post Share on other sites More sharing options...
dhruval.shah Posted May 14, 2015 Report Share Posted May 14, 2015 did anyone get the area of the triangle Q on the vector part on P1? I got some complex number involving roots so that doesn't seem right for a P1 ... Reply Link to post Share on other sites More sharing options...
IbTrojan Posted May 14, 2015 Report Share Posted May 14, 2015 did anyone get the area of the triangle Q on the vector part on P1? I got some complex number involving roots so that doesn't seem right for a P1 ... whoa...did you get something to do with root 66 by any chance? I thought it was the WEIRDEST thing... But I'm pretty sure I got it wrong Reply Link to post Share on other sites More sharing options...
dhruval.shah Posted May 14, 2015 Report Share Posted May 14, 2015 did anyone get the area of the triangle Q on the vector part on P1? I got some complex number involving roots so that doesn't seem right for a P1 ... whoa...did you get something to do with root 66 by any chance? I thought it was the WEIRDEST thing... But I'm pretty sure I got it wrong root 66 was somewhere in my answer .. it was a fraction i think .. that Q was going so well until they asked us to find that area .. 1 Reply Link to post Share on other sites More sharing options...
IbTrojan Posted May 14, 2015 Report Share Posted May 14, 2015 did anyone get the area of the triangle Q on the vector part on P1? I got some complex number involving roots so that doesn't seem right for a P1 ... whoa...did you get something to do with root 66 by any chance? I thought it was the WEIRDEST thing... But I'm pretty sure I got it wrong root 66 was somewhere in my answer .. it was a fraction i think .. that Q was going so well until they asked us to find that area .. I know right? WHOA, so I might get partial marks? That's good enough for me right now, something's better than nothing. Especially because there's quite a high possibility I lost 13 marks in the last 2 letters of #10 That stupid stupid question. I hate Ann, she should lose the game (no offense intended to any Ann's out there) 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.