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Heaviside's Rule??

too right. thank you! matter of fact I got 79/80 in my last assessment task... forgot to take pos/neg of a complex square root equating real and imaginary components.. x^2 - y^2 = 5 xy=6 therefore x=3, y=2 root=3+2i .....FAIL

:)

Haha well it pretty much sums up the study of physics. I suppose it does abstractly relate to photography. It just sounds like you are a physics student and really like the subject... I was surprised that you weren't doing it. Don't think I would have ever guessed photography

I have a bit of a love-hate relationship with probability... It is never a learn the formula and substitute in the values sort of thing. You always have to think about it... ARE THE MARBLES REPLACED? "really large replacement in equation form" If so, P(2 Blue)= (2/5)² x...

lol. yes thats right. CSSA Trial 2002 Q1 and 3 I thought I remembered these questions from somewhere. Haha

Discuss the policy options available to the federal government to deal with environmental issues affecting the Australian economy and explain the limitations to these policies. Well I think that 25% may be about right, a paragraph at the start?, be concise. This is an economics essay, not...

Discuss the policy options available to the federal government to deal with environmental issues affecting the Australian economy and explain the limitations to these policies. Well I think that 25% may be about right, a paragraph at the start?, be concise. This is an economics essay, not...

just use the co-efficient to root relationships 1) let the roots be A and 2A A+2A=12 A=4 2A=8 c=2A^2 c=32 2) x^2 + bx + 36 = 0, integral roots let the roots be A and B 36= A x B (A,B)=(4,9)(-4,-9)(3,12)(-3,-12)(6,6)(-6,-6)(2,18)(-2,-18) Notice that (A,B) is the same as (B,A) [FYI] So...

I do similar Doing all the questions obviously gives you the best preparation. However, at exam time, there is no way you can work your way through all the Cambridge q's...unless you are an insomniac.

What I have done in the 2 unit is work out three probabilities... First, P(two '5's), then P(seven '6's).... When doing probability, if you want to find the probability of two particular things happening P(a) and P(b) both together, then you must multiply their particular probabilities...

The trig formulae are a set of results that can be used to solve equations or integrate or solve proofs etc.. You don't really need to be able to prove them but for the sake of maths... cos(2A)= cos^2(A) - sin^2(A) cos(2A)= [cos^2(A) - sin^2(A)] / [cos^2(A) + sin^2(A)] Now divide by the...

lol 1 is less than x is less than 5 region between but not including x=1 and x=5 love the complex

For 2 Unit students; P(two '5's) To find the probability of obtaining two '5's, we multiply the probabilities along the tree [or a branch of the tree] to obtain every possible way to obtain the result. So, if I want two '5's, will have to achieve these fives somewhere among the nine dice...

Big waste of time. No doubt about it.... However, if you intend to study further probability later in life, I suppose you could give it a go if you really wanted. But remember, time spent learning that stuff is time that could have been spent learning stuff that is in your HSC!

This is the geometry [not geography lol] proof... You take the two similar triangles and use the fact that their corresponding similar sides are in proportion to one another... algebraic manipulation and tada! [BTW I rotated the triangle through about 90 degrees anticlockwise (don't ask why...

Haha thats good, gotta love missing trig formulae The basic idea of 't' formulae is that if you take the trig double angle results, you can derive expressions for the sine and cosine ratios in terms of tan(A/2), where A is an angle sin(2A)=2.sin(A).cos(A) sin(A)=2.sin(A/2).cos(A/2)...

The 't' formulae is probably best used for part (i) hope this helps

Economic Growth is measured by the change in real [adjusted for inflation] GDP from one period to the next. Within Australia, economic growth is measured as a percentage change of real GDP per annum and is calculated for each quarterly period by the ABS; it is also measured in terms of real GDP...

I really am unsure as to whether I am on the right track or not. Someone care to shed some light? Is that how you properly calculate the probabilities and to get the "two '5's and seven '6's" result do you multiply the probabilities?