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:( I cant go on until someone answers this question... guess everyone is studying for their half yearlies.......I DID MINE TWO WEEKS AGO!!!!!!!!!!

Just a question... Write a formula for the sum of the first n multiples of 4 and use the method of mathematical induction to prove your formula true. This is what ive done so far! Sn = 4 + 8 + 12 + 16 + ... + 4n T2 - T1 = 8 - 4 = 4 T3 - T2 = 16 - 12 = 4 T2 - T1 = T3 - T2...

thanks people... it did sound stupid.. and the book was jacaranda.......i hate it so much (for other reasons)

Thanks alot!!

Yeah you made some errors, you did 2 + 2 + 2 = 8, where its supposed to be 6, and thus parts c and d are incorrect, but i see how you do it now. All you have to do for part d, is use A^3+A^2+2=0 but multiply both sides by A. To solve A^4 + B^4.......i cant be bothered... right?

The equation x3 + x2 + 2 = 0 has the roots A, B, C (alpha, beta, gamma) Evaluate: a) A + B + C b) A2+ B2 + C2 c) A3+ B3 + C3 d) A4+ B4 + C4 I can do a, b and c, but not d. Could anybody help me out please?

Hehe, today my friend showed me how to work it out the possible roots... thanks anyway!!!

No wonder i was able to get 70 something for geography and 80 something for history. I didnt no jack shit for both those subjects.... Considering that.. my SC result was pretty crap. Got band 6 (91 for science - im proud of that, considering i had 40% or so for my mark during the half yearly.. i...

My physics textbook states: "When there is nothing attached to the motor to slow it down, the speed of the armature increases until the back emf is equal to the external emf. When this occurs there is no voltage across the coil and therefore no current flowing through the coil. With no current...

erm...... rivet is 100% correct....

first i would draw y = x, and then y = e-x. From this it would be possible to determine various parts of the graph, i.e. when it is negative or postive, where its cuts the y-axis, and show you where the graph is undefined. From these two graphs you could multiply ordinates to determine the...

Still dont really get it..

Im having some trouble trying to understand the rational roots concept. Something about an | p and a0 | p. How do you determine all the possible roots from this?

Terry lee's a dickhead

Man i dont get that...... i guess ill have to ask my teacher.. fitzpatrick doesnt explain anything... nothing at all like that..

Damn yeah...

This question has several parts, many of which i have done. If w = x + x-1 prove that, i) x2 + x-2 = w2 - 2 ii) x4 + x3 + x2 + x + 1 = x2(w2 + w - 1) = [x2 + (1/2)x(1 + √5) + 1][x2 + (1/2)x(1 - √5) + 1] Show that the roots of x4 + x3 + x2 + x + 1 = 0 are the four complex roots of x5...

Nuh i need a late library for the friday to sunday period of the week! All of them open late and close early.. so if anybody knows one that closes late (dont really care THAT much bout it opening early) can you tell me?!?!

Man yeah i wanna go work at the library too.. but they all close so bloody early. Why cant they stay open till like 8 or 9... whats wrong with people... They open so late too on weekends.. its friggen annoying..

What do you mean write 0? And um... im just gonna write it the way ive done hehe...