MedVision ad

2 unit maths revision (2 Viewers)

boredoffail6

Banned
Joined
Feb 22, 2011
Messages
15
Gender
Undisclosed
HSC
N/A
You're a cutie.


Really? Thank god it's not 2U!!!!1111!!!!11!!!shift+1



Shit.

Next Question.
Differentiate the following with respect to x:
c)
d)
e)

(OMFG I DID THE TEX THING WITHOUT GOING ON THE SITE)
you just have express the reciprocal ratios as bases of -1

e.g. for the first question cot(3x) = 1/tan(3x) = [ tan(3x) ]^-1

and when you take the sqrt you raise to a power of one half'

so y= ([ tan(3x) ]^-1 )^(1/2)

then when you raise a power to another power, multiply the powers

so y= [ tan(3x) ] ^(-1/2)

now used chain rule

you do a similar thin part e, and part d is quotient rule
 

Squishxmishyx

Olive You.
Joined
Nov 10, 2009
Messages
325
Location
Parramatta
Gender
Male
HSC
2011
now used chain rule
So what's the derivative of tan3x? 3???////???shift+/

Next question.
A cam is formed with cross-section (LMAO WTF?).
The cross-section consists of a semicircle AXC centre O and radius and a sector ABC of radius r, centre A and angle
(i) What is the perimeter ABCX of the cam in terms of r and ?
(ii) If the area of the cross-section of the cam is 1 square unit, show that the perimeter P is given by
(iii) Show that the least perimeter occurs when and calculate the value of to the nearest degree.

Man I need to drop this shit.
 

boredoffail6

Banned
Joined
Feb 22, 2011
Messages
15
Gender
Undisclosed
HSC
N/A
lol get a bloody tutor for god sake, if you cant do those derivatives then you are screwed, its just continual application of 3basic rules

dont expect anyone to do fully worked solns for the derivatives questions, they are very long, but very easy
 
Last edited:

Squishxmishyx

Olive You.
Joined
Nov 10, 2009
Messages
325
Location
Parramatta
Gender
Male
HSC
2011
lol get a bloody tutor for god sake, if you cant do those derivatives then you are screwed, its just continual application of 3basic rules

dont expect anyone to do fully worked solns for the derivatives questions, they are very long, but very easy
I got a bloody tutor for god's sake, in fact, those questions are from my tuition. I can't do those derivatives, I am screwed. I'll continue the application of 3 basic rules. I won't expect anyone to do fully worked solutions. They are long, like my penis but easy like your mum.

Next Question.
A window consists of a rectangle surmounted by a semi-circle having its diameter the width of the rectangle. If the perimeter of the window is t meters, find the greatest possible area of the window.

ps. Page 10, someone answer my question for the retarded circle diagram!
 

hscishard

Active Member
Joined
Aug 4, 2009
Messages
2,033
Location
study room...maybe
Gender
Male
HSC
2011
lol get a bloody tutor for god sake, if you cant do those derivatives then you are screwed, its just continual application of 3basic rules

dont expect anyone to do fully worked solns for the derivatives questions, they are very long, but very easy
Our school only started learning trig. It takes time for us to grasp certain concepts. You already know everything and hence think everything is easy. This isn't the case for someone that's just learnt the content
 

Squishxmishyx

Olive You.
Joined
Nov 10, 2009
Messages
325
Location
Parramatta
Gender
Male
HSC
2011
thats so easy

lol whats the deal everyone going to their million dollar tutoring colleges and then coming on here after help, get it from your millionare tutors , geezz, millionare
Because if I don't come here, I'll be at the city getting raped.
I come here for motivation and meeting A-M-A-Z-I-N-G people like you, Matthew Goodwin.
 

AAEldar

Premium Member
Joined
Apr 5, 2010
Messages
2,246
Gender
Male
HSC
2011
Next Question.
A window consists of a rectangle surmounted by a semi-circle having its diameter the width of the rectangle. If the perimeter of the window is t meters, find the greatest possible area of the window.
Lol, I just had that exact question on my weekly maths assignment :D

Also, boredoffail, why are you answering the questions? It's a 2U thread, and you're in Uni. You obviously know how to answer them, and some people here aren't so good at maths. Maybe let them answer the questions.
 

cutemouse

Account Closed
Joined
Apr 23, 2007
Messages
2,250
Gender
Undisclosed
HSC
N/A
When is that online tutoring place going to reply to me, it took a whole week for the first reply, hopefully the second doesnt take so long :| !
I heard that some members of this forum sent them some interesting material about you :p ... But that's just what I've heard...
 

Trebla

Administrator
Administrator
Joined
Feb 16, 2005
Messages
8,390
Gender
Male
HSC
2006
I would like to remind members to stick to the topic of the thread. Insulting others will NOT be tolerated, especially when unprovoked. Keep your opinions to yourself and please be considerate to other members in a public forum. Other members viewing this thread do not want to see a pathetic childish conflict being publicly played out in an educational thread like this. We do not give a crap about what issues you have with other members but we ask you NOT hijack a thread and publicly attack each other in a forum like this. It is completely selfish and extremely inconsiderate of other members who wish to use this thread for educational purposes.

You can deal with whatever issues you have with other members OUTSIDE this forum.
 
Last edited:

SpiralFlex

Well-Known Member
Joined
Dec 18, 2010
Messages
6,960
Gender
Female
HSC
N/A
I would like to remind members to stick to the topic of the thread. Insulting others will NOT be tolerated, especially when unprovoked. Keep your opinions to yourself and please be considerate to other members in a public forum. Other members viewing this thread do not want to see a pathetic childish conflict being publicly played out in an educational thread like this. We do not give a crap about what issues you have with other members but we ask you NOT hijack a thread and publicly attack each other in a forum like this. It is completely selfish and extremely inconsiderate of other members who wish to use this thread for educational purposes.

You can deal with whatever issues you have with other members OUTSIDE this forum.
Agreed.

Next question (I think this is 2 unit): The third term of an AP (arithmetic progression) is 7, and the seventh term is 31. Find the 8th term. (Show FULL working out)
 
Last edited:

Drongoski

Well-Known Member
Joined
Feb 22, 2009
Messages
4,255
Gender
Male
HSC
N/A
Anyway your fav question:
Evaluate: |x^2-4|= -1

I was surprised to find several questions of similar type in a book "Algebra Visually" ?? recently @ West Ryde Library including: Solve and the given answer was: .

But you know this inequality is true for all real x.

As for: if you solve the usual way you get

But this is nonsense since no x can satisfy this equation.
 
Last edited:

Users Who Are Viewing This Thread (Users: 0, Guests: 2)

Top