HSC Stuff > HSC Mathematics Extension 2
4U Maths Question Thread
jakesilove:
--- Quote from: Happy Physics Land on February 13, 2016, 10:22:56 pm ---Please send help Almighty Jake when you are available!!! This has been screwing me over!!! :-[
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Thank you so much Jake! <3 (I dont know why the images are sideways doe...)
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CLICK HERE TO SEE THE IMAGES/QUESTION
Hey HPL.
Typical you giving me incredibly difficult 4U maths questions at Midnight. Couldn't resist though, so this is the solution I came up with! An extremely, extremely difficult graphing question, and I definitely may have missed some components, so if anyone in the community wants to correct me please do.
Like I said, if anyone has any corrections, suggestions, or anything like that, please feel free to post below. Extension 2 is an incredibly difficult course, one that even University professors often struggle with.
Still, this is a lot of fun (to me, I know I'm a bit of a nerd) so keep posting, and keep answering questions! We're starting to build a real community, and I love watching it grow.
Yours,
Jake :)
jakesilove:
--- Quote from: xXCandyDXx on February 13, 2016, 11:22:01 pm --- He really is a god
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Aha thank you all, although I wouldn't go so far as to say that. My head still hurts sometimes when I try to do Extension 2 Maths questions!
Still, thanks for participating in the forums so actively! Hope to see you around here soon :)
Happy Physics Land:
--- Quote from: jakesilove on February 14, 2016, 12:18:30 am ---Hey HPL.
Typical you giving me incredibly difficult 4U maths questions at Midnight. Couldn't resist though, so this is the solution I came up with! An extremely, extremely difficult graphing question, and I definitely may have missed some components, so if anyone in the community wants to correct me please do.
(Image removed from quote.)
(Image removed from quote.)
(Image removed from quote.)
(Image removed from quote.)
(Image removed from quote.)
Like I said, if anyone has any corrections, suggestions, or anything like that, please feel free to post below. Extension 2 is an incredibly difficult course, one that even University professors often struggle with.
Still, this is a lot of fun (to me, I know I'm a bit of a nerd) so keep posting, and keep answering questions! We're starting to build a real community, and I love watching it grow.
Yours,
Jake :)
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I swear you enlighten me Jake, this is actually more than what my teacher will ever explain for me. Omg thank you sooo much Jake this must have taken you an extensive amount of time and I reallly reallly reallly reallly reallllllyyyy appreciate this. So elaborative and it just helped me to understand so much better (the difficulty of this question essentially dropped from a 10/10 to a 5.5/10, which I reckon is a huge achievement). I am just extremely grateful, thank you so much for everything you have done Jake!!!!!!!! :D :D
keltingmeith:
--- Quote from: jakesilove on February 14, 2016, 12:18:30 am ---Like I said, if anyone has any corrections, suggestions, or anything like that, please feel free to post below. Extension 2 is an incredibly difficult course, one that even University professors often struggle with.
--- End quote ---
Holy crap that was beautiful to watch. o.o I feel I have a name change coming on...
The only thing I have to add is this:
Just as Jake did, if you're ever in doubt - sub in some points, and draw lines between them. From there, it's a really good idea to pick out the "nice" points to pick out.
For example, in the case of the f(1/x) question, x=1 is easy - both functions share that point! Other easy cases include x=+/- infinity (as they go to zero) and x=0 (because that'll go to infinity). In fact, it's worth going through all the functions you know, and thinking about what the easy points are - for example, f(x)=sin(x) and f(x)=e^x. Not just for answering these types of questions, but any type of graphing question - if you ever get stuck on a graphing question, and you know some "easy" points, then you can very quickly take a guess at the graph's shape by picking some points and drawing lines between them!
(a bunch of that was really just repeating - but I felt it needed a stronger emphasis, soz Jake :P)
(also, hi from Victoria, where our maths subjects don't try to kill us~)
katherine123:
For the poly ques how do u find the leading coefficient? I only know that there are 2 known roots
and for the trig ques i dont know how to simplify it after implicitly differentiating
please help thank you
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