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Prove by induction that the sum of the angles of a polygon with n sides is n - 2 straight angles [HINT: Dissect the (k+1)-gon into a k-gon and a triangle] ?? i am n00b :(

i just made a start on mathematical induction.. prove by mathematical induction for all positive integers n 1 + 2 + 2^2 + 2^3 ... + 2^n = 2^(n + 1) - 1 is there a mistake with this question? to my understanding of induction so far i have to prove its true for n = 1... LHS = 1...

NVM sorry if anyone answered - BoS lagging badly anyway .. stupid question :p .. anyway another Q.. Tn = 2n + 3 + 2^n is a mix of AP and GP. USe combination of AP and GP formulae to find Sn?

i meant first 300 terms... and also another question, not maths related why is BoS lagging so badly? is it just me or what?

answers have 162

ive proved 1/n + 2/n + 3/n ..... + n/n = (n+1)/2 and then it goes hence find the sum of the first 300 terms of 1/1 + 1/2 + 2/2 + 1/3 + 2/3 + 3/3 + 1/4 + 2/4+ 3/4+ 4/4 .. etc help please? EDIT: Sorry typed up wrong denominator at the start =\

just revising for my preliminary yearly and either i dont understand, or am getting slightly different answers 1) 6 people sitting at a table, Find how many ways this can be done if Rosy sits on Jilian's left hand side? Im thinking a hexagons vertices, so there would only be 2 places that...

threat yes/no? scary.

i agree 3u maths ftw easy if you are always on top of yur h/w

Two points P(2ap, ap^2) and Q(2aq, aq^2) where p > q move along the parabola x^2 = 4ay. At all times the x coordinates of P and Q differ by 2a a) find the midpoint M of chord PQ, and the Cartesian equation of its locus b ) Give a geometrical description of this locus ok .. ive done M {a(p...

im in prelim , and from what we've done so far .. not much at all .. all i can remember from the top of my head is average/marginal propensity to consume/save oh and working out total unemployment and stuff, but thats like the simplest of maths well said :)

Prelim. 3 maths 2 english (advanced) 2 physics 2 economics 2 business studies HSC 4 maths 2 english (advanced) 2 physics 2 economics

thats confused me more .. whats meant by that?

firstly, year 11 eco leading edge textbook states one factor of factors affecting interest rates as demand for liquid funds : if individuals in the economy have a stronger preference for highly liquid funds, they may be willing to forego the yields (returns) from buying securities, and...

why are you allowed to just cancel out the 16a and make it am^2 + b =,<,> 0 ???? this is in relation to Cartesian Approach on parabolas.. and the discriminant..

any idea on the approximate mark needed to attain 90%+ as your hsc mark?

Well I thought it would help me through next year (4u) and uni.. guess i should've asked that is it any help for 4u? and also can you be more specific with the locations i can buy? like a certain store name?

really saw no better place to post this.. does anyone know any Mathematica retailers in the Western Sydney area? I want a students edition.. any help will be greatly appreciated

URGENT Question.. When a polynomial is divided by (2x + 1)(x - 3), the remainder is 3x - 1. What is the remainder when the polynomial is divided by 2x + 1 The trouble im having is that cambridge answers contradict my own, and i havent found a mistake in them before, so im not entirely...

another polynomial question .. Find the monic, even quartic that has y intercept 9 and a zero at x=3 Nevermind :)