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Re: HSC 2016 4U Marathon $ Hint: $ P(x) = \frac{1}{2} Re(\sum_{k=1}^{4}((-1)^kcis{k\theta}))

Re: MX2 2016 Integration Marathon One of my answers was 60 and the other was \int_7^{13}\sqrt{x^2-1}dx

I wasn't asking you to prove what the kid said. Prove what you said by quoting something from the text to support your answer. "I personally believe that such a lack of education stems from a religious belief. "

Can you quote something from the Quran or Sahih hadith which actually confirms your statement ?

How do we solve mechanics questions where mass changes and also g changes. For example a rocket entering a space cloud the g increases the closer you get and the mass of the rocket increases. Also shouldn't we work with variable g when doing any mechanics question in the vertical motion? How do...

Re: MX2 2016 Integration Marathon I think I posted this and got told off because app it wasn't elementary...

Re: MX2 2016 Integration Marathon Can someone give me a hint in this : \int_0^1{\frac{1}{(x^2-x+1)(e^{2x-1}+1)}}dx Nevermind got it.

Re: HSC 2016 3U Marathon $ (iii) Prove that $ \sin{\frac{\pi}{2015}} +\sin{\frac{2\pi}{2015}}+...+\sin{\frac{2014\pi}{2015}} = \cot{\frac{\pi}{4030}}

No. Your answer is correct. Just pointed out something with what Lee said.

I think it's the opposite high voltages are better. If there is a low voltage the current is higher and thus has a higher chance of causing the semi-conductor to no longer possess its super conductive properties.

$ If two of the roots are equal without the information of them being rational one way you could do it is : \alpha ^3 +m \alpha ^2 +15 \alpha -7 = 0 ---(1) 3 \alpha ^2 +2m \alpha +15=0---(2) $ Since it has a double root $ (2) \cdot \frac{\alpha}{2} ---(3) (2)=(3) $ Solve for...

Re: HSC 2016 4U Marathon - Advanced Level It was a calculus book. Some guy proved that it converges to a number only if the graph's concavity is towards the x axis.

I thought it was strange when I wrote up my answer :P... One day Integrand decided to go to UNSW orientation day. Upon driving there, he realised that his phone was low on battery. He plugged his phone into the car's charger(The cigarette hole) and noticed something strange. He looked at the...

I'm not even going to ask, you're 100% a girl if you write that neat...

Re: MX2 2016 Integration Marathon Obviously he is joking when he says that...

Are you a girl ?

Lenz's Law states that if there is a change in magnetic flux, a magnetic field/ current will be induced to counteract the change. This means that the speed of a magnet passing through a current carrying conductor will essentially slow down. Let's suppose that the opposite was true. If the magnet...

Going against it's teachings isn't really following the religion.

Re: MX2 2016 Integration Marathon lita ! You left something undone. Please solve that inequalities question on the 4u advanced marathon.

Arguments for Divine Existence and Unity and how to acquire a firm conviction of Divine Unity In the name of God, the Merciful, the Compassionate. First station Consider the following verses: God sets forth parables for humanity in order that they may bear (them) in mind and take...