http://community.boredofstudies.org en Sat, 21 Nov 2009 12:46:54 GMT vBulletin 60 http://community.boredofstudies.org/images/misc/rss.jpg http://community.boredofstudies.org http://community.boredofstudies.org/showthread.php?t=229259&goto=newpost Fri, 20 Nov 2009 22:25:44 GMT GeoGebra - Download

Some of you will probably already have this, but some won't. My math's teacher was using it to teach us vectors on thursday, and it seemed to work pretty well. It's just a graphing program, like graphmatica, but it graphs complex numbers, and it's free :D I just downloaded it myself and it seems to work pretty well. So enjoy :) ]]> Mathematics (Extension 2) mitchy_boy http://community.boredofstudies.org/showthread.php?t=229259 http://community.boredofstudies.org/showthread.php?t=229242&goto=newpost Fri, 20 Nov 2009 10:37:51 GMT i've been away sick from school lately and falling behind =(
how would u do this question:

find all real number a and b such that (a+ib)^2=9 +40i

cheers in advance ]]> Mathematics (Extension 2) hendo144 http://community.boredofstudies.org/showthread.php?t=229242 http://community.boredofstudies.org/showthread.php?t=229211&goto=newpost Fri, 20 Nov 2009 07:33:47 GMT anyone have solution to chapter 31 of orange mathematic book ?

due on monday and my teacher gone kill me if i don't hand in all chapter 31 completed... .. i will have to wag if i dont do it but attendence go below 70 % ]]> Mathematics (Extension 2) han weezy http://community.boredofstudies.org/showthread.php?t=229211 http://community.boredofstudies.org/showthread.php?t=229123&goto=newpost Thu, 19 Nov 2009 10:40:16 GMT Hi. I'm having trouble on some integration. These are from the 2 U Fitzpatrick Book.

12. A hemispherical bowl of radius a units is filled with water to a depth of a/2 units. Find, by integration, the volume of the water.

18. The region bounded by the curve x^1/2 + y^1/2 = 2 and the coordinate axes is rotated about the x-axis. Find the volume of the solid generated. ]]> Mathematics (Extension 2) nrlwinner http://community.boredofstudies.org/showthread.php?t=229123 http://community.boredofstudies.org/showthread.php?t=228866&goto=newpost Tue, 17 Nov 2009 07:07:40 GMT can someone please show me how to derive x/y and x^2/y^2 w.r.t x thank you can someone please show me how to derive x/y and x^2/y^2 w.r.t x


thank you ]]> Mathematics (Extension 2) bob fossil http://community.boredofstudies.org/showthread.php?t=228866 http://community.boredofstudies.org/showthread.php?t=228754&goto=newpost Mon, 16 Nov 2009 08:40:44 GMT Could you check if this is right please? If z1 = 2 cis (5pi/6) and z2 = 3cis (2pi/3). Write z1z2 in a) mod arg form b) a + ib form a) z1z2 = 2 cis (5pi/6)3cis (2pi/3) = 6cis ( 3 pi / 2) = 6 cis 270 Could you check if this is right please?

If z1 = 2 cis (5pi/6) and z2 = 3cis (2pi/3).
Write z1z2 in a) mod arg form
b) a + ib form

a) z1z2 = 2 cis (5pi/6)3cis (2pi/3)
= 6cis ( 3 pi / 2)
= 6 cis 270

b) a = rcos@ b = rsin@
Now what? No idea D:

thanks :D ]]> Mathematics (Extension 2) fullonoob http://community.boredofstudies.org/showthread.php?t=228754 http://community.boredofstudies.org/showthread.php?t=228614&goto=newpost Sun, 15 Nov 2009 04:58:22 GMT In the general formula of a ellipse, WHY does b^2=a^2(1-e^2) ? Thanks in advanced. In the general formula of a ellipse, WHY does b^2=a^2(1-e^2) ?

Thanks in advanced. ]]> Mathematics (Extension 2) Gussy Booo http://community.boredofstudies.org/showthread.php?t=228614 http://community.boredofstudies.org/showthread.php?t=228607&goto=newpost Sun, 15 Nov 2009 04:12:49 GMT w= (z-i)/(z-2) w is purely imaginary i keep getting a circle with radius 1 and centre 1,0 w= (z-i)/(z-2)

w is purely imaginary

i keep getting a circle with radius 1 and centre 1,0 ]]> Mathematics (Extension 2) newnoise http://community.boredofstudies.org/showthread.php?t=228607 http://community.boredofstudies.org/showthread.php?t=228470&goto=newpost Sat, 14 Nov 2009 01:25:57 GMT I make many many silly mistakes in Maths when I work fast. During Year 11, I had around 1 hour left to check for my Half Yearly and Yearly but despite that, I still made 10+ silly mistakes.
I worked slow for my first common test in Year11 and as a consequence, I wasn't able to finish the exam. I lost 10+ marks because I didn't get to finish it and i wasn't able to check my work (silly mistakes).

so should I work fast or slow from now on? ]]> Mathematics (Extension 2) ninetypercent http://community.boredofstudies.org/showthread.php?t=228470 http://community.boredofstudies.org/showthread.php?t=228453&goto=newpost Fri, 13 Nov 2009 20:28:38 GMT I downloaded this software for free from some site called wolfram but I don't know how to make it work. Can anybody download it and help me? ]]> Mathematics (Extension 2) Dragonmaster262 http://community.boredofstudies.org/showthread.php?t=228453 http://community.boredofstudies.org/showthread.php?t=228443&goto=newpost Fri, 13 Nov 2009 12:31:19 GMT I've got a quick query here.

How would I find the modulus and argument of something like this

]]> Mathematics (Extension 2) nrlwinner http://community.boredofstudies.org/showthread.php?t=228443 http://community.boredofstudies.org/showthread.php?t=228405&goto=newpost Fri, 13 Nov 2009 09:15:32 GMT hey is there a way that i could get accelerated without doing my preliminaries?? my teacher said that he could somehow get me into ext 2 maths without it. is that possible?? hey is there a way that i could get accelerated without doing my preliminaries??
my teacher said that he could somehow get me into ext 2 maths without it.
is that possible?? ]]> Mathematics (Extension 2) raceryt http://community.boredofstudies.org/showthread.php?t=228405 http://community.boredofstudies.org/showthread.php?t=228057&goto=newpost Tue, 10 Nov 2009 11:15:53 GMT x^2+2xy+3y^2=18 x^2+2xy+3y^2=18 ]]> Mathematics (Extension 2) Dragonmaster262 http://community.boredofstudies.org/showthread.php?t=228057 http://community.boredofstudies.org/showthread.php?t=227650&goto=newpost Sat, 07 Nov 2009 12:58:36 GMT Integrate:

f'(x) = (x^3)/(x+1) ]]> Mathematics (Extension 2) Dragonmaster262 http://community.boredofstudies.org/showthread.php?t=227650