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Like some of you (maybe?), I've had trouble downloading things off webct. Sometimes the lecture notes/slides will download but mostly the page just come up as blanks. When they do download I can't print them properly, the printed page comes out blank except for "page 1 of 1" on the top and...

*shakes head* By using your rule which alternates between the addition of 2 and 4, since 2 + 2 = 4, then .: to get the number before it, it would need to be 1 + 4 which = 5 or 2 - 4, which = -2 and not 2. :p .: I agree with baby beanie :)

[/B] I think the teacher missed a rule...I don't get WHY you do that. I just took it by looking at the answer that the "derivate of the power" goes out infront of the rest ie that's where I thought the 3 came from. Yes thanks FishSauce you did get the right answer. :):)

Thanks, now I know we haven't done that rule. :) However looking at the answers shouldn't it also have the derivative of the power x as well? eg dy/dx=f'(x).ln(a).a^x ???

How do you differenciate a) 3^x b)2^(3x-4) :confused: Advance Pleases and Thank You(s) :D

Everyone on BoS is so helpful :D Anyway cuz I can't seem to edit my post, I can do 6 a) and b) but I got really stuck on this one. Where z=cisq, prove the following: d) -(1+i) (( √3) + i) z = 2(√2) [cis (q - (7π/12))] (the spaces mean multiply)<O:p</O:p

What's the difference between show and prove? :confused:

Oh gosh ur right, sorry, I'll be more careful next time and thanks. :o

Thanks :) but I did a) and b) but I didn't understand c) Well the answer for 4c is Cos (7π)/12 = [1+(sq-root3)]/(sq-root8) Sine (7π)/12 = [1+(sq-root3)]/(sq-root8) I feel like I'm missing something really obvious, coz they're conjugate pairs or something :confused:

If z = [1+(sq-root3)i] x (1+i) 4a) Express z in the form x+iy, where x and y are real :)

Where do you get Parker Pens from?

Re: Recommended Texbooks/Study Guides? Text books aren't that important esp for prelim. You could borrow text books from your friends and family for a night or two to write notes and stuff - I'm sure they'll be more than willing to lend them to you. Raid your town library or school...

Hey BoSer's I'm having some trouble with complex numbers, any help would be greatly appreciated 4. b) by expressing 1+ (sq-root3)i in mod-arg form, show that z = (sq-root8) cis (7π)/12 that's the first part of the question which I can do, here's where I'm lost c) Hence, find the exact...

Compulsory fitness testing and bans on junk food to combat obesity...woops they already have the 'healthy canteen policy,' I miss my starburst and mentos.