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Is there any other way I could do this? Thanks

Hello, How do I do this question? Thanks Show x+(1/x) >_ 2 , for all x>0 (ie. x+(1/x) is greater than or equal to 2) Thanks again!

Well, you'd want to do the one that most people do... Otherwise you may disadvantaged. I dunno how many people do Astrophysics compared to Quantum to Quarks... I'd probably choose Astrophysics though, given your circumstance.

Hey, dont you mean P(2)? Thanks

Hi, Firstly thanks for your help... But I get |z1|2.i when I sub in pi/4... So what type of locus would that be? Thanks again

Hi, could someone please help me with the following complex numbers question? Thanks Let l be the line in the complex plane that passes through the orgin and makes an angle α with the positive real axis, where 0 < α < pi/2 (SEE ATTACHMENT) The point P represents the complex number z1[/sup]...

Hi, could someone please help me with the following question? Thanks When the polynomial P(x) is divided by (x+1)(x-2), the result can be written as P(x)=(x+1)(x-2)Q(x) + R(x), where R(x)=ax+b (i) Given that P(-1)=3, find the value of R(-1) (ii) Given also that the remainder is -2 when P(x)...

Oh crap... I'm lost... :( Could you please explain that to me about the constant and L?

It's light transmitted per unit area... so shouldn't I let the outside intensity of light be I and then divide it by the area, and then equate them using the 1:0.5 factor?

Hello guys, I'm having trouble solving this question. Could someone please help me? A large bay window is to have the shape of a rectangle topped by a semi-circle as shown in the diagram below (attached). The rectangle is of clear glass while the semi-circle is of tinted glass that transmits...

Hi guys, I have no idea on how to do Question 19 in the 2007 HSC paper. This flowchart represents one model of scientific method used to show the relationship theory and the evidence supporting it. (See p14 of http://boardofstudies.nsw.edu.au/hsc_exams/exam-papers-2007/pdf_doc/physics-07.pdf...

The THRUST is constant. ie, F = T - mg I see what you're trying to say. But the multi-stage rockets are designed so that the rocket's engine is shutdown after each stage, so that the G forces do not exceed the maximum g-force that the human body can handle. That is, after one stage the engine...

Well we got a ridiciously hard test -- Nobody finished. The top mark was 35/40, and I got 34/40.

Yes, either Year 7 or Year 8. It's a long time ago. lol, it's not necessary for Year 10+ so I've forgotten.

That's the case with our school aswell... and I got 2nd in that Series and Series Applications test, lol.. 1 mark off 1st. Too bad it doesn't count :(

Did you ever study English at school? (and do well at it?) Evidently not.

Uhh simultaneous equations with a common variable (eg. 't') of some sort? Lol, I did this stuff in like Year 7 so I can't remember :|

The answer is A, B, C, or D... Why? Because it's multiple choice. Oh, the actual answer should be (A), provided that you are on the ground near the wire. I wont explain this to you, until you explain why you tried to take advantage of those posting in the Physics Marathon thread.

Uhh, It's a known fact that all terrorists are Muslims... (Not saying that all Muslims are terrorists :) ), so what you're saying is incorrect.

Hello, could anyone please help me with the following question? Thanks A and B are the extremities of the major axis of an ellipse. CD is any line parallel to the minor axis. P is any point on the ellipse and the lines PA and PB cut the line CD at H and K respectively. Show that the tangent at...