Journal Posted May 14, 2015 Report Share Posted May 14, 2015 few questions then.what did everyone get for value of X in question 1. the venn diagram about kiwis, mangoes etc-what did you guys get for the value of a in the normal distribution question about the apples-what did you get the common difference to be?What did you get for question 6? about profit etcCommon difference is 2 Reply Link to post Share on other sites More sharing options...
81jpjdpaj Posted May 14, 2015 Report Share Posted May 14, 2015 I got 10 for value of X, 2 for common difference I think and 16 bicycles for profit.i got 14 bikes for profit. Agree with the rest...Btw for normal distribution did you use the 5% they give you and just do 1-5/100=0.95 and thats the Area you enter into Inv.normWhattt ****t no I didn't do that I forgot we had to do that, I put 0.05 I'm pretty sure my way was right because otherwise the value of A was 7 and A was meant to be the larger value so ye I got 8.97 for value of A in normal distrb. Reply Link to post Share on other sites More sharing options...
tonim17 Posted May 14, 2015 Report Share Posted May 14, 2015 I got 10 for value of X, 2 for common difference I think and 16 bicycles for profit.yeah i got exactly the same! And the profit equation you had to simplify: 360x-(260x+(don't remember number lets say 12)= 44x+12 in order to get full marks for the equation of profit Reply Link to post Share on other sites More sharing options...
calculette Posted May 14, 2015 Report Share Posted May 14, 2015 did you get n = 36 also for the question on sequences? and then 498 or 499 or something for the other one.. Reply Link to post Share on other sites More sharing options...
81jpjdpaj Posted May 14, 2015 Report Share Posted May 14, 2015 did you get n = 36 also for the question on sequences? and then 498 or 499 or something for the other one.. for the sequences question if you got the common difference right, you got the whole question right. Some people said they got like cd =3 or cd =4 . I'm pretty sure the cd was 2. Some of my classmates were adamant it wasn't 2 and they normally get 7s. So, I'm not sure what to believe Reply Link to post Share on other sites More sharing options...
calculette Posted May 14, 2015 Report Share Posted May 14, 2015 It was definitely 2 because :equation for TOTAL n was n^2 + 6n so total of S1 = 1 x 1 + 6 x 1 = 7and total of S2 = 2 x 2 + 12 = 16meaning that U2 = 9 9-7 = 2 Reply Link to post Share on other sites More sharing options...
shosho12 Posted May 14, 2015 Report Share Posted May 14, 2015 I got 10 for value of X, 2 for common difference I think and 16 bicycles for profit.i got 14 bikes for profit. Agree with the rest...Btw for normal distribution did you use the 5% they give you and just do 1-5/100=0.95 and thats the Area you enter into Inv.normWhattt ****t no I didn't do that I forgot we had to do that, I put 0.05 I'm pretty sure my way was right because otherwise the value of A was 7 and A was meant to be the larger value so ye I got 8.97 for value of A in normal distrb. Yeah, I got 8.97 for my A value as well.Got 2 for the common difference, 16 bikes, n=498 for the lowest value that would equate to more than 1000 and x=36 for the last question, but I needed more time in general where an extra 15 minutes would've been perfect. However, I was glad in the same time that the trig part we got wasn't as tricky as the questions in they got in 2014 including May and November ESPECIALLY November. Whenever I'm home after an exam day, the fact that the exam is over, stimulates my brain and I get a series revelations about all of my mistakes or even how to approach the question Reply Link to post Share on other sites More sharing options...
Journal Posted May 14, 2015 Report Share Posted May 14, 2015 I got 10 for value of X, 2 for common difference I think and 16 bicycles for profit.i got 14 bikes for profit. Agree with the rest...Btw for normal distribution did you use the 5% they give you and just do 1-5/100=0.95 and thats the Area you enter into Inv.normWhattt ****t no I didn't do that I forgot we had to do that, I put 0.05I'm pretty sure my way was right because otherwise the value of A was 7 and A was meant to be the larger value so ye I got 8.97 for value of A in normal distrb.Yeah, I got 8.97 for my A value as well.Got 2 for the common difference, 16 bikes, n=498 for the lowest value that would equate to more than 1000 and x=36 for the last question, but I needed more time in general where an extra 15 minutes would've been perfect. However, I was glad in the same time that the trig part we got wasn't as tricky as the questions in they got in 2014 including May and November ESPECIALLY November. Whenever I'm home after an exam day, the fact that the exam is over, stimulates my brain and I get a series revelations about all of my mistakes or even how to approach the question Yesssss same here!!!! It's because the atmosphere and the stress of actually taking an exam messes you up and I hate that it makes me not know things I always knew! It sucks and it's because they put too much pressure on these exams Reply Link to post Share on other sites More sharing options...
tonim17 Posted May 14, 2015 Report Share Posted May 14, 2015 on the arithmetic question. after calculating the common difference, which was 2, they asked for the nth term or Un right? Reply Link to post Share on other sites More sharing options...
watermelonprincess Posted May 15, 2015 Author Report Share Posted May 15, 2015 I got 10 for value of X, 2 for common difference I think and 16 bicycles for profit. i got 14 bikes for profit. Agree with the rest... Btw for normal distribution did you use the 5% they give you and just do 1-5/100=0.95 and thats the Area you enter into Inv.norm I used the 0.95 because it's the inverse whenever they give you a percentage Reply Link to post Share on other sites More sharing options...
fio13 Posted May 15, 2015 Report Share Posted May 15, 2015 For paper 1 TZ2 what did you guys find for the truth table?? I think it was question 3 or 4! Apparently it was a tautology but I have no idea how... I found that it was neither 1 Reply Link to post Share on other sites More sharing options...
tonim17 Posted May 15, 2015 Report Share Posted May 15, 2015 The first one was neither then the second question which asked to say whether it was tautology, contradiction or neither "<=>" was tautology Reply Link to post Share on other sites More sharing options...
Journal Posted May 15, 2015 Report Share Posted May 15, 2015 What do you mean the first one?? There was just one question asking to say if it's tatuology or neither. I put neither btw and I'm sticking with it I believe it's right tbh hahaha Reply Link to post Share on other sites More sharing options...
tonim17 Posted May 15, 2015 Report Share Posted May 15, 2015 A) was Fill in the table, (b) state whether a tautology and © was state whether eg. "P<=>Q" is a tautology, contradiction, or neither and it was tautology Reply Link to post Share on other sites More sharing options...
calculette Posted May 15, 2015 Report Share Posted May 15, 2015 It was neither, because the final column was TTFT. If you got TTTT that means that you said that T --> F is True, which is wrong I think. Reply Link to post Share on other sites More sharing options...
tonim17 Posted May 15, 2015 Report Share Posted May 15, 2015 It means if and only if and that means they have to be both true or both false and Id you had neither on the first then I'm pretty sure it was tautology! I double checked that one. Don't know who s right nkw Reply Link to post Share on other sites More sharing options...
tonim17 Posted May 15, 2015 Report Share Posted May 15, 2015 The first question was to fill the table right? Then the second was to state what it was. Then the third they gave another one which was p<=>q and we had to say what that was! And that one was a tautology. The first was neither the second was tautology Reply Link to post Share on other sites More sharing options...
81jpjdpaj Posted May 15, 2015 Report Share Posted May 15, 2015 Does anyone remember their values they had for question 1 about venn diagrams on paper 2? After the solving for X =10, does anyone remember their values for the subsequent questions. Reply Link to post Share on other sites More sharing options...
shosho12 Posted May 15, 2015 Report Share Posted May 15, 2015 I got tautology as well, it wasn't asking for implication and you had to have one more column to answer B. Most of my classmates got neither as well, but I spent about 10 minutes going over my answer. Reply Link to post Share on other sites More sharing options...
tonim17 Posted May 15, 2015 Report Share Posted May 15, 2015 I got tautology as well, it wasn't asking for implication and you had to have one more column to answer B. Most of my classmates got neither as well, but I spent about 10 minutes going over my answer.Exactly you also had tautology for the second question right? Reply Link to post Share on other sites More sharing options...
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