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pi's Specialist Maths Questions

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pi:
Thanks brightsky! :)

My crazy teacher will probably let me use them, he hates 'Australian standard' maths anyway ;D

mmonn1906:
I am just scared I won't get a high score..

Andiio:

--- Quote from: Markkiieee on July 05, 2011, 05:55:49 pm ---I am just scared I won't get a high score..

--- End quote ---

Instead of thinking about the technicalities, focus on getting your basic foundations strong and sturdy. Then year 11/12 will be an absolute breeze.

pi:
Just a couple of questions:

1.
This is from MathsQuest (:o), p. 264
Evaluate:
I got upto , which is only one step from the question, and am now stuck :(



2. (two parts)
(i)
This is more of a confusion. We have to find an antiderivative using .
I know, that by the formula sheet, that one antiderivative would be

But if we do . Isn't this also true?

Bit confused at what to write now if this pops up in the exam...

(ii)
AND, by extension, doesn't and mean that ?

^I know that is completely NOT TRUE, as is an established identity

Please VN, what have a done wrong? Because I am definitely wrong here :( :( :(


Thanks!




EDIT: fixed up 2 (ii) question, sooo stupid

HenryP:
For question 1, its actually a typo. I spent half an hour trying to figure it out as well and realised it was a typo after reading the worked solutions. Cos is meant to be Tan. Then its simple enough to anti diff.
This is why I hate mathquest. Hope this helped.

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