2 unit maths revision (1 Viewer)

[Squishxmishyx]

I Love Matthew Goodwin.

You're a cutie.

I don't think this is 2U...

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)

 

[boredoffail6]

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

 

[hscishard]

Chain rule
Quotient rule
Product rule

Lol

 

[hscishard]

New question
Find the general equation(s) of the tangent to the circle x^2 + y^2 = 1

 

[jessica2011hsc]

ohh the irony

you say that then you post an even easier question XD

sorry didnt realise =/ it was in the development section of cambridge so i just thought, okay just put that. lol

 

[Squishxmishyx]

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]

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

 

[Squishxmishyx]

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]

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]

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.

 

[boredoffail6]

.
I come here for motivation and meeting A-M-A-Z-I-N-G people like you, Matthew Goodwin.

evidently I am only as "AMAZING" as the answers I give

 

[AAEldar]

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

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.

 

[slyhunter]

Because BOF has taken a liking to trolling BOSers.

 

[cutemouse]

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 ... But that's just what I've heard...

 

[Trebla]

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.

 

[SpiralFlex]

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)

 

[hscishard]

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)

a+ 2d = 7
a+6d = 31

d=6
a=-5

-5 +7x6
=37

 

[hscishard]

A cubic has a y intercept of 5 and two turning points1,12) and (-2,15). Find the cubic

Solve |x^2-4|= -1

New question
Find the general equation(s) of the tangent to the circle x^2 + y^2 = 1

All can be done with 2 unit methods

 

[Drongoski]

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.

 

[Squishxmishyx]

Find the point of inflexion on the curve .