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Drongoski's latest activity
D
Drongoski
replied to the thread
inequality problem
.
Say you choose any x between -1 and 5, x = 2, say. then |x+1| + |x-5| = |2+1| + |2 - 5| = 6. Choose another such number, say x = -0.7...
Mar 19, 2024
D
Drongoski
replied to the thread
inequality problem
.
Follow what i said. Draw a line and mark off -1 and 5. any number x between and including -1 and 5 will have |x+1| + |x-5| = 6 (a fixed...
Mar 19, 2024
D
Drongoski
replied to the thread
inequality problem
.
To me graphing is easier like this: Draw the number line and mark off the 2 numbers "-1" and "5". The distance between these 2 numbers...
Mar 19, 2024
D
Drongoski
reacted to
ZHANDONG's post
in the thread
justifying a trig for inequality
with
Like
.
maybe but I figured it out immediately after
Mar 16, 2024
D
Drongoski
replied to the thread
justifying a trig for inequality
.
Yes! For someone doing MX2, your grasp of the fundamentals of trigonometry needs to be better.
Mar 16, 2024
D
Drongoski
replied to the thread
justifying a trig for inequality
.
It is. It is always true that: cos(\pi -\theta) = -cos \theta whatever the value of theta.
Mar 16, 2024
D
Drongoski
reacted to
jimmysmith560's post
in the thread
Got a class test coming up
with
Like
.
It would be a good idea to leave past HSC exam papers aside for now. This is for two reasons: Attempting past HSC exams should be done...
Mar 13, 2024
D
Drongoski
replied to the thread
euler's form
.
No.
Mar 9, 2024
D
Drongoski
replied to the thread
Sequence induction proof
.
In outline as LaTeXing is so tedious. \therefore b_2 = b_{1+1} = b_1(b_1 + 1) = 1(1+1) = 2\\ \\ \therefore b_2 = 2 = 1 + \sum ^1...
Mar 8, 2024
D
Drongoski
reacted to
WeiWeiMan's post
in the thread
perms and combs question
with
Like
.
Consider the combination formula nCr = n!/r!(n-r!) By inspection, n=6+4=10
Mar 7, 2024
D
Drongoski
replied to the thread
Sydney uni removing advanced maths prerequisites
.
Australia likes to boast about world-class universities. All those university ranking bodies like the Times Higher Education World...
Mar 5, 2024
D
Drongoski
replied to the thread
Sydney uni removing advanced maths prerequisites
.
I recall having a chat with a stranger about 10 years ago who told me he was doing Electrical Engineering at USyd, but did not study...
Mar 4, 2024
D
Drongoski
replied to the thread
Sydney uni removing advanced maths prerequisites
.
Bad! Unis are nowadays often run by bureaucrats (Scott currently at USyd) - not by administrators with an academic background. I think...
Mar 4, 2024
D
Drongoski
reacted to
tywebb's post
in the thread
Sydney uni removing advanced maths prerequisites
with
Like
.
https://www.smh.com.au/national/nsw/sydney-university-abandons-hsc-prerequisites-in-diversity-push-20240301-p5f918.html Sydney uni are...
Mar 4, 2024
D
Drongoski
replied to the thread
anyone can do extension 2 tutoring?
.
If anyone is seriously interested in a highly experienced 1-on-1 Maths Ext 1 and/or Maths Ext 2 tutor, please message me. I'm not a...
Mar 2, 2024
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