CamilleRodriguez Posted October 15, 2011 Report Share Posted October 15, 2011 thaaank you Reply Link to post Share on other sites More sharing options...
Scootaloo Posted October 15, 2011 Report Share Posted October 15, 2011 (edited) I am somewhat confused regarding the part where it says to plot T9 against x. Does that mean I find the individual T9 values for whatever values of x I choose and then plot that against the x axis? The example on the sheet says (2,5), and if the calculations come up with 32, I would then plot (5, 32). Would this be correct? Edited October 16, 2011 by Scootaloo Reply Link to post Share on other sites More sharing options...
Peanut Butter Jelly Posted October 16, 2011 Report Share Posted October 16, 2011 should we complex and imaginary numbers? Reply Link to post Share on other sites More sharing options...
SSJ5Goku Posted October 16, 2011 Report Share Posted October 16, 2011 should we complex and imaginary numbers?For n = i, what's the value of Sn? It doesn't really work. For a and x, I guess you could use different types of numbers. It might be a good idea, actually.. 1 Reply Link to post Share on other sites More sharing options...
Peanut Butter Jelly Posted October 16, 2011 Report Share Posted October 16, 2011 This is a pretty simple IA right? I only have about 6 pages. Reply Link to post Share on other sites More sharing options...
dessskris Posted October 16, 2011 Report Share Posted October 16, 2011 I am somewhat confused regarding the part where it says to plot T9 against x. Does that mean I find the individual T9 values for whatever values of x I choose and then plot that against the x axis? The example on the sheet says (2,5), and if the calculations come up with 32, I would then plot (5, 32). Would this be correct? for x=0 what is T9? for x=1 what is T9? for x=2 what is T9? for x=3 what is T9? for x=4 what is T9? etc and plot its graph should we complex and imaginary numbers? I honestly don't see the need, it's not even in your syllabus. 1 Reply Link to post Share on other sites More sharing options...
Peanut Butter Jelly Posted October 16, 2011 Report Share Posted October 16, 2011 should we join lines on the graph and does it matter if we plot Sn vs n or n vs Sn? Reply Link to post Share on other sites More sharing options...
trashmouth Posted October 17, 2011 Report Share Posted October 17, 2011 (edited) Hey we just got the type one math SL IA, the one on infinite summation and I'm really confused. Especially over the last part, do we used the math we do at the start of the assignment to prove the unknown equations at the end? Also help on the explanation would help so much. Thank you Edited October 17, 2011 by trashmouth Reply Link to post Share on other sites More sharing options...
dessskris Posted October 17, 2011 Report Share Posted October 17, 2011 not really.please read the big Infinite Summation thread in the Maths SL forum, all hints have been posted there. if you have any question just ask there. Reply Link to post Share on other sites More sharing options...
dessskris Posted October 18, 2011 Report Share Posted October 18, 2011 should we join lines on the graph and does it matter if we plot Sn vs n or n vs Sn?get a best regression of a suitable form. Sn vs n is preferred because n is kinda like the independent variable while Sn is dependent on the value of n. 1 Reply Link to post Share on other sites More sharing options...
britney spears is awesome Posted October 23, 2011 Report Share Posted October 23, 2011 i cant believe there are 19 pages on this topic! anyone willing to summarize/organize the important points for everyone? Reply Link to post Share on other sites More sharing options...
Zhenya Posted November 2, 2011 Report Share Posted November 2, 2011 Hey everyone! I have two general questions about this portfolio: 1) Approx. how many different values do you think we should include when we're supposed to make up our own? (Like in the question about 'Define T(a,x) as the sum of the first n terms, for various values of a and x') 2) In the criteria guide thing it says we're supposed to apply our results to another example... This made sense to me in the Type II IA but are we supposed to do it here too? I'm not really sure what we're supposed to include =/ Thanks a lot for your help! P.S. First time post... *nervousnervous* Reply Link to post Share on other sites More sharing options...
dessskris Posted November 6, 2011 Report Share Posted November 6, 2011 Hey everyone! I have two general questions about this portfolio: 1) Approx. how many different values do you think we should include when we're supposed to make up our own? (Like in the question about 'Define T(a,x) as the sum of the first n terms, for various values of a and x') 2) In the criteria guide thing it says we're supposed to apply our results to another example... This made sense to me in the Type II IA but are we supposed to do it here too? I'm not really sure what we're supposed to include =/ Thanks a lot for your help! P.S. First time post... *nervousnervous* hello, welcome to IBS 1. usually at least 3. but in the define part, they are not asking you to do anything or come up with whatever value they're just explaining what the notation means, and you should use that notation too and briefly describe what it means, like in the task paper. 2. which criterion is that? for criteria C and D (and maybe some others but I can't remember), they have different descriptions for and demand different things from type 1 IA and type 2 IA. so refer to the ones for type 1... I don't remember it asking us to apply it to other situations, so yeah look at your guide carefully. Reply Link to post Share on other sites More sharing options...
IBaGurl1994 Posted November 7, 2011 Report Share Posted November 7, 2011 So the one question I have is about the infinity. Do you think they want us to do just positive infinity, or should we do decimal infinity as well? Such as when we're testing the validity of our general statement. Reply Link to post Share on other sites More sharing options...
Peanut Butter Jelly Posted November 7, 2011 Report Share Posted November 7, 2011 what do you mean? negative infinite summation doesn't really work.,, Reply Link to post Share on other sites More sharing options...
IBaGurl1994 Posted November 7, 2011 Report Share Posted November 7, 2011 Well, for example on the first page when it says to do different values of a when x=1, you can make a=100000, but you could also make it a=0.0000001. Have you tested it? Look at the graph!! Ahh! So I was just curious as should we make a=decimals less than 1? Cuz if we do, it gets so much more complicated.... Reply Link to post Share on other sites More sharing options...
Peanut Butter Jelly Posted November 7, 2011 Report Share Posted November 7, 2011 oh i thought you mean something else. IDK but I just followed the instructions... and I believe I did do decimals, but not negative numbers until the end. Reply Link to post Share on other sites More sharing options...
IBaGurl1994 Posted November 8, 2011 Report Share Posted November 8, 2011 I gottit now... I know why it goes up and down. Reply Link to post Share on other sites More sharing options...
dessskris Posted November 8, 2011 Report Share Posted November 8, 2011 So the one question I have is about the infinity. Do you think they want us to do just positive infinity, or should we do decimal infinity as well? Such as when we're testing the validity of our general statement.only positive Reply Link to post Share on other sites More sharing options...
bomaha Posted November 8, 2011 Report Share Posted November 8, 2011 (edited) So the one question I have is about the infinity. Do you think they want us to do just positive infinity, or should we do decimal infinity as well? Such as when we're testing the validity of our general statement.You should test your general statement by using all kinds of positive real numbers. Put "a" as positive decimal, integers, pi, etc ...However, "x" can be any real number. Edited November 8, 2011 by bomaha Reply Link to post Share on other sites More sharing options...
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