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I am 2009 HSC student and I really advise you to do 4U maths Reasons are: 1) scales up very high 2) Fun but I will not advise you to do it if you are not good at Extension 1 maths You said you are getting 95+ in 2U, but ALL extension 1 maths students in my class (approx 27 people) got...

Omg even terry didn't get full marks lol? This test was really hard. I think extension 2 was easier than this comparing scaling ==

Thanks for the solution but for Q3 i) isnt the range y>1 because 3/4 + (e^2x)/4 and e^2x > 1 therefore 3/4 + 1/4 = 1

60-83% that was hard I hoped the last question was something not about probability

LOL I know my teacher plays computer game in the lesson WTH??? that';s why i dropped it

hi

it does not count but everyone got zero - 33.33% because the questions are crazy You cant use anything else except for the first principle to differentiate these a) tan x b) Ln x c) e^x "c" is probably the easiest one, some of us could do it. The math teacher is being gay and said...

can you show me the working how to got 6m^2? i think you misunderstood something you need to use trig to find the length and the width of the desk and then this involves trig because you should use the Θ. Then you need to find dA/dΘ to find the minimum possible value of the area. you let...

Minimum value for the desk download the diagram from the attachment. some are actually confused so you must download the picture. Two corridors meet at right angles and are 2m and 3m wide respectively. Θ is the angle marked on the given figure and ABCD is a desk which must be kept...

thank you guys >.<

1) a and b are variables related by the equation ab^3 = 40. At the instant when a = 5, b is increasing at 1 unit per second. What is happening to a at this instant? 2) A right angled triangle ABC has a fixed hypotenuse AC of length 10cm, and side AB increases at 0.1cm per second. At what...

Thanks everyone i got it !!!! yay

given that Θ = arctan 3/x - arctan 2/x prove dΘ/dx = (2 / x^2+4) - ( 3 / x^2+9) hence find x when dΘ/ dx = 0 incase you need an answer ANS. x = root 6 All i need is prof of that thing... soo hardd -_- DO NOT GIVE ME ANY LINKS..I NEED workingss. thanks australian international...