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Just need some pointers Hi, I know this sounds stupid to ask but could someone tell me what a precis map is, is it one where only one feature is drawn (i.e landuse)?? And also, when giving coordinates, latitude comes before longitude right? thanks

Thankyou, that helped a lot :D!

Hi, i am seriously struggling with the following questions: I'm stuck on how I can integrate a second time in question 9. In question 12 I have integrated to find the displacement formula however I'm stuck on how I can substitute pi into the formula. An I'm lost all together in question 13. Any...

Re: 回复: Motion and Differentiation Great, thanks guys.

Hi, i'm stuck on the following question. If anyone could solve it and show me how you solved it, it would be greatly appreciated :D.

Of course...thanks alot :).

Hi, i'm struggling with finding the derivative for this question and hence finding the equation for the rate of change, any help is greatly appreciated :D.

Much better...thanks alot!

Ok its making much more sense now :D. Im still stuck on how you made log32 + 4log32 / 2log33 = log32 + 4log32/ 2...i just dont see how you can make 2 the denominator as 2log33 can't be divided into 4log32??? Sorry if ive confused you.

hmm...im still lost in the first question. First of all, how did you turn log32 + log342/log332 into log32 + 2log32/2log33...shouldn't it be log32 + 2log34/2log33? Finnaly i don't see how you turned log32 + 2log32/2log33 into log32 + 2log32/2??? Thanks for the help.

The image should be showing...try visiting http://img217.imageshack.us/img217/8628/91735408hu2.jpg. So basically your saying that if it were say (e^x)/5 the derivative would still be (e^x)/5 becuase x is not in the denominator?

Hi, im struggleing with these questions: Im completly lost as to how you would do question 7. In question 14 however, I used the quotient rule to derive y=e^x/2 and got e^x/4 however the book lists the derivative as e^x/2 again??? Any help is grealty appreciated.

Nevermind I worked it out. The integral was 1/pi tan pix but I forgot to put the pi in radians...so stupid. Thanks for the help.

My mistake...for question 6 it should read "from x=0 to x=0.15". Sorry about that. (Now fixed in original post) Im following everything up until this point: V = pi int sec^2 pix dx pi/6->0 V = pi [ tan pix/pi] pi/6->0 When you integrate sec^2 pix shouldn't it become 1/pi tan pix dx becuase...

I'm wondering if anyone can help me with the following questions: In question 5 i get 0 as answer (which is obviously wrong), I think it may have something to do with my integration as when I integrate y=sec^2(x/4) i get y=4tan(x/4)...is this correct? Im lost all together on question 6...

Thanks, makes much more sense now. Im still a little lost as to how sin(pi-x) = sinx, i understand that sin180=0 so shouldn't it be sin-x, since its 0-x???

Okay thanks. Now i am lost as to how you made 3 . 1/(cos^(pi/3)) eqaul 3 . 1/((1/2)^2) in question 3. And in question 4 how did you know that when x=pi/6 = square root of 3/2??? I must be missing the point somewhere because even the example in the book confuses me...

Thanks for the reply. Im still a little confused however. In question 3, how did you turn 3sec^2(pi/3) into 3 . 1/(cos^(pi/3)), i dont see how the cos comes into it??? And in question 4 how does sin(pi - x) = sinx?? Sorry if these are basic questions but i am really struggling trying to get my...

Hi, a struggled with these questions in the excercise: In 1v) the answer was given as cosx/sinx=cotx, im sure this is correct but I have no idea why, could someone please explain to me why that is the answer? In 3 and 4 I am stuck with finding the gradient, i can derive the y value easy enough...

Hi, I have a task coming up soon and I need to relate some changes in the current budget to the economic effects of: -Resource Use -Income Disribution -Economic Activity Im a little stuck and am not sure where my examples fit in. At the moment I have the $19billion investment in education to...