To be honests, I was thikning about that while I was studying for my HSC because my big brother had another ruder version and I was in year 10, Now I am doing the HSC and now I came across it again... I dont like the F words in there by the way... watch your language (as some teachers say ^^...
my ahrdests exam ever out of my whole high school years
well.. thats because i BLUDGED ALOT lol
but.. i can tell its hard overall.l. everyone sayin its quite ahrd
but pass for sure =) YAY
talkin to myself here.. oh wells.. lol
such a loser
haha
neways
err.. for y = e^1-x the coeff of x is -1.. which means that the GRADIENT in this exponential curve is - i.e. and leaning towrds the LEFT of the axees or number plane... soo.. yar.. and the y-intercep is when x=0...
hmm.. anyways.. looks like no one has been eager to go into this thread b4 our hsc.. oh wells.. mths is comin soooo.. lol
heres a tip
ummm...:
lol
whenever y=e^x is used... as x increases the basic curve is gaining more concavity or the gradient is getting rapidly and more tapidly...
erm yeh.. for the graph y= e^x
passes through (0,1)
e^x or y or f(x) is always >0 for all x (domains)
is always concave up (NOTE this is also used in parabolas)
x --> + inf. then y or e^x or f(x) --> + inf as well
x --> - inf. then y or e^x or f(x) would approach to --> 0! (ASYMPTOTES...
juss be yourself and do your best and write.. lol
anyways.,.. maths on monday.. soo
lol
hmmm... the derivative offf a^x hmmmmssssss... is
is
erm
well
dy \ dx = a^x log (base e and ONLY BASE e) x (where x is the power and a is the index)
therefore:
f(x) = a^2 would be...
dont you dare.. lol
anyways.. got 2unit so liek.. did you know?
Log (base a) x ^n = n log (base a.. or whatever base) x ??
and ohh ohh this one too
log (base a) x + log (base a) y = log (base a) x.y ?? kewl huh
LOL cya
volumes of revolution about the y axis formula:
V = PIE . times the (S... sum) of the integral from a --> b (X)^2 (this X...which is || to the y axis, which is why it is rotated about the Y axis!) units^3 (CUBED!! if there is no units staterddd... over stayterrd.. ohhh whyyy, doo you... lol...
leon? mate i'm thinkin about... areas of integration.. know what i menn:
area enclosed by the y-axis means that... S of the int of a--> b f(y) dy (in terms of y) is = [F(y)] a--> b = F(b) - F(a) units^2 (if no unitss) and where a and b is read off the y axis [take the absolute value if it is...
for indefinate integrals or PRIMITIVE FUNCTIONSSS.. the constant CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC MUST ALWAYS BE ADDED to da answerrrrrr =)
its equation of the y' means that we can find the m at any point along a curve...
hmmm
soOOoO :) :rolleyes: :rolleyes: :rolleyes: :rolleyes: :cool: :cool: :cool:
mmmmk? lalala
a normal equation means.. that, it is the ORIGINAL curve
ahh ok... hmmm, new threads pilin up on the oldies, what do you mean?
anyways.. heres a maths quiz
dudes of 2 unitsssss... express 0.303030 using the sum of infinte formulue
well.. solution..lol:
all you do is form this equation you see
0.303030 = 0.30 + 0.0030 + 0.000030 + ...