Search results

go back to usyd just kidding man

Just imagine a world with you and 195 friends, each of you own a company which sells food If you (Australia) have a rise in income, then you will have more money to spare, so you would buy more food from your friends (overseas) (so increasing imports) If your friends (overseas) have a rise...

No! Acceleration is not proportional to displacement

I got 6 Times top and bottom by sqrt(9x^2+5) + 3(x-2), simplify and divide by every term by the lowest power of 'x' belonging in the denominator - in this case, x

loooooooooool

Not everyone remembers everything

^Bold - sorry i had to do it, gave me a nice laugh lol yeh that's a nice strategy man, i also realised that i tend to over-think and make more errors when attempting a question twice lol - this happened to me in the recent calculus test :( yeh the logical step for breaking the absolute value...

You should be so careful if you are afraid of 'silly mistakes'. If you have defeated the 'silly mistakes' obstacle, then I think you should speed through the easy questions with maximum focus and then use most of your time on the harder questions or ones that require careful reasoning (mostly...

LOL yeh haha The limit questions (finding the left and right hand side of the limit) were so time consuming

lol... they are so hard dude, i cant even do half of it..

80% is a beautiful mark man, i think i would get >50% :D ah silly mistakes are not a problem for me anymore, my work is more organised..since im in 1141, there might be [X] questions!!!! im scared!!! (which past tests are you talking about...I haven't done any)

me :D who does MATH1081 (discrete maths) here? if you are, how are you finding it?

Thanks bro

Hello! So on myUNSW -> Commonwealth Gov Forms -> SA help -> SA-help applied for.... (this is what is says on mine) Does that mean im under SA-help? Thanks

Comp sci, software engo, adv math (one of them)

Drewk, read the question again Your (AUB^c)U(AUB) should be (A intersect B^c) U (A U B) AND say if you began from (AUB^c)U(AUB) - you can't use the distributive law

hm.... ii) f(g(x)) is an exponential function, so clearly for every y in R, there exists at most one x in R such that f(g(x)) = y (this is the idea in your mind) To show it in the test, just show that if x,y in R and f(x) = f(y), then x = y!! (this actually means that if you begin with x and y...

i) Yep correct, I think you should write 'one-to-one' instead of '1-1' EDIT: Also include that for x, y in A, if f(x) = f(y), then x = y and likewise for function g ii) Show a bit more working out Start from g(f(x)) = g(f(y)) f(x) = f(y) as g is one-to-one x = y as f is one-to-one hence g...

The function is f(x), so if you input blah, you get blah Input [0,1], you get [0,1], hence that is the range yep, continue with that working out or you will lose marks sorry, but i have to go now, i'll help you tomorrow - good luck with this

Range (f) = (-infinity, infinity) f is 1-1 iff for all y ∈ R, there exists AT MOST one x ∈ R such that f(x) = y So it's either yes or no. Clearly from a quick sketch, it is NOT 1-1, so we need to provide a counter-example (numerical example) So when y = -4, 2x^3 + 3x^2 = 0 --> gives 2 x...