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I'm not sure what to do when you're not given the boundaries. I tried letting x = 0, to give the y intercepts, and I got y=3 and y=1 for them. End answer was wrong. Correct answer: 10/2/3 units.

I thought equity was where it does take individual circumstances. If not, then what exactly is meant by "judged on its own merits" because that sounds like individual circumstances are taken into account.

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Solution: a = 3 b = -9 So hmm.

The curve y= ax3 + bx2 - x + 5 has a point of inflexion at (1, -2). Find the values of a and b. I didn't even attempt this question when we had it for homework. Hopefully someone will answer by tomorrow morning.

Ah right, I must have been making silly mistakes when I tried, was just making sure there wasn't something basic I was forgetting (besides logic) thanks again :)

Hmm, I tried with my calculator at least twice to get the wrong answer, and now when I try I get it right. I was just sort of wondering what's the order of operations (if that's even the right term) to solving this. Just say that x=1. Do you simplify the first bracket then multiply by the next...

Oh wait I typed the wrong thing. You differentiate inside the brackets but integrate outside. then you'll get the 3x^2 to cancel out leaving only a negative or a -1 and then that gets to the solution. It seems like if I do that I'd get these sorts right. It was on a different worksheet which was...

Its from a larger question, but I just failed at the subbing in to find the y value. y = (3x - 1) (x - 2)^4. x = 2/3, what do we do here? I kept getting 1/16 :/ correct answer 3/13/81 Thanks.

Right, right. Yeah I knew that chain rule. So the chain rule is the same for integration? Just the work we've gotten hadn't really shown us that. Just to see if I get this correctly, you divide by -3x^2 because you integrate the value in the brackets and then divide by 5 and add 1 to the power...

I don't think I remember it, glanced at it in my textbook and it looked weird, care to explain it for me?

As it stands you can't easily put an equation through the latex editor and put it in your initial post. It only works for replies. I figured we can always just use the tags () around the equation but not everyone knows that.

\int 3x^{2}(5-x^{3})^{4} dx My Solution -\frac{x^{3}(5-x^{3})^{5}}{5} + C Solution: -\frac{(5-x^{3})^{5}}{5} + C

Silly that you can't use latex for the starting of a topic, so I'll reply with the question :)

People collecting the data, whether manually or through a computerised system, they're still participants. Also the technical people behind it all. Remember participants are the people that carry out the 7 info processes. So you could say DB admins (Storing and Retrieving) and graphics designers...

Explain how they work. You'd have a textbook section on this, use that plus some information you research off the internet. Explain the benefits/disadvantages of EFTPOS and POS systems over traditional systems. It's quicker, helps for stocktake, may have technical issues. Users of the system...

First one out of those two was 26/52 * 25/51 which I ended up getting because of the explanation. for d), I don't understand why it's that. if there are 4 10s and 4 5s, shouldn't it be 8/52 * 7/51? Thanks I got the first part just didn't get my head around the 2nd bit :)

He MUST mean they moved from 2U to general. My girlfriend dropped 2U this term and had to redo the 1st assessment that General did with a bunch of other kids. Or he must just mean year 11 :)

Sorry, can anyone answer the question? I'll do it here so it's in one place. a) Show that the are of the garden is A = \frac{1}{2}x\sqrt{25 -x ^{2}} b) Find the greatest possible area of the garden bed. I've done part a), I didn't know what to do with b). Now everyone should be able to...

Sorry for the tripler, last question from this review. a) and b) i've done. c) I tried doing 1/13 * 13/51 = 1/51 with d) I ended up with the same thing. Answers are: c) 13/102 d) 8/663