2. 1)
tan4a
= tan(2a+2a)
= (2tan2a) / (1-tan²2a) [using the double angle formula expansion]
= [2(2tana/1-tan²a)] / (1-tan²2a) [using the double angle formula expansion on the numerator)
= [2(2tana/1-tan²a)] / (1-{2tana/1-tan²a}²) [using the double angle formula expansion on the...
1.
let the roots be (a-1), a, (a+1)
sum of roots: -b/a
therefore, (a-1)+a+(a+1) = -p
3a=-p
a=-p/3
when a=-p/3,
(-p/3)^3 + p(-p/3)^2 + q (-p/3) + r = 0
algebraic manipulation of the above ^ gets 2p^3+27r-9pq=0
Who was born in Australia?
Geez, where do you want me to start, lets see, i think John Howard, Kevin Rudd, Oh and possibly 15 million other people who makes up our population.
Yeah, economics is so much fun, i just can't stop laughing at times where i'm not sleeping in class, and anything is better than business studies, including, thats right, cambodian extension.
hihihihihihihi im really scared about what UAI i will get, so can i be one of the lucky people who get a prediction from you superb bored of studies people?? thx
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Our schơol is one...