Search results

The implication was to look at things positively rather than negatively. It was supposed to be a glass half full / half empty analogy. The best way to remember something is (1) Have an interest in the topic beyond marks alone (2) Understand how something works rather than just memorising...

I wouldn't be risking it. HSC examiners don't like you using work from beyond the course, and they are likely to find any reason to knock you back. Until you can find an HSC head marker who says that is OK, steer clear of using it.

The velocity starts at zero and heads towards -5 ..... I thought you said this question was about quick motion ? .......

How about telling it to remember stuff instead?

It sounds like your school has split up extension trigonometry into two parts. As that is not done in the syllabus, you will have to ask your teacher. And as InteGrand suggested, DON'T use L'Hopital's rule unless you are prepared to explain where the rule itself comes from and when it can be...

I'm sure he means 'slices', and that is 4 unit work.

Have you drawn the diagram and located the region to be rotated? After solving simultaneously, it should be easy to see how the region should be split, leading to the sum of two volumes.

I notice that the posts I made yesterday do not appear under "Find latest posts". My most recent post on that list is from June 3. Could this be fixed.

Using parametric coordinates (cosθ, sinθ), and using l=rθ, ie. l=θ, so dl/dθ = 1 dx/dt = dx/dθ × dθ/dl × dl/dt = -sinθ × 1 × 2 = -2y = -2√(1-x²)

Ummmm ..... you know I'm a maths teacher, right? A, S, T, C are not the names of the quadrants - "sin is positive in A and S" makes no sense. It's like taking ROYGBIV and saying "Green is the g-th colour of the rainbow".

What is a fail? Do you mean less than 50%, or do you mean an Asian fail ?

Huh?

OR 2sinxcosx/2sin^2(x) = cotx >1 for given domain sin2x > 2sin^2(x)

Why do you call it "series and sequencing" ?

By dropping a perpendicular to the floor from the point where the cylinder touches the ceiling, that exact value appears straight off the diagram without going through that equation. Edit - oops, that is Ambility's solution.

An attempt in 3D Geogebra

But that is EXACTLY what the vast majority of christians do. Which is why there are so many varieties and sub-varieties of christianity, and why christianity is seen as such a joke amongst atheists. Any no-one is able to prove which fiction is the correct one - it is ONLY a belief based on the...

Common sense does say you can't have 0.45 dogs. But it doesn't explain why you take the next integer. Not unless it said something like "what is the minimum number of dogs required to be 45% sure that at least two dogs had the same birthday".

25 years of teaching, and this "standard" has eluded me.

Not if you think 'plausible' is the right word here.