substituting x=e^u made it a bit easier
It's the pinching theoremAnd btw whats the theorem called when a value for eg:
0^- < x < 0^+
and then you assume at lim n-> infinity x->0
hmm agreed.i think the start was harder but end was easier. i feel like the e4 might be a little lower, but the top end will be "sandwiched" together because last q was fairly simple
what a waste of time"without using calculus, sketch the graph y = x^2 - 1/x^2"
*uses calculus in pencil to check intercepts, asymptotes and trends*
+1what a waste of time
Do you reckon you can get the mark for the height if you just simply subbed in h = sqrt(y^2 - (y^2)/4) without drawing a diagram or labeling how you deduced the value of h?one for getting the height and other dimensions
one for getting correct area/volume expression
one for getting the correct integral with correct limits
one for evaluating the integral correctly i.e. correct answer
How did you do aDimitri?what a waste of time
http://community.boredofstudies.org...ts-mathematics-extension-2-a-post6773375.htmlHow did you do aDimitri?
And does anyone have a copy of the paper to make it easier to discuss?
well i WAS happy but i just found another 3 marks lost from silly errors. i'm sitting on i think about 95 now. lost 2 in MC, accidentally found the minimum value of fi instead of maximum, and made 1 silly mistake in q11 integral (somehow got - the answer)How did you do aDimitri?
And does anyone have a copy of the paper to make it easier to discuss?
OMG same! did you also put theta = 0 or 180?well i WAS happy but i just found another 3 marks lost from silly errors. i'm sitting on i think about 95 now. lost 2 in MC, accidentally found the minimum value of fi instead of maximum, and made 1 silly mistake in q11 integral (somehow got - the answer)
i wrote 0, pi, 2pi, etc.OMG same! did you also put theta = 0 or 180?
Same.most of us are just waiting for Carret's solutions.
maybe, want to cross-check with me?
pi/4 was theta, I thinki wrote 0, pi, 2pi, etc.
quite obviously yespi/4 was theta, I think
It wasn't as easy as the last question in our Baulko trial this year though.last question came out too easy for a last q tbh. had to do it twice to make sure i wasnt dreaming