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fan96's latest activity
fan96
replied to the thread
Hard enrichment question from the Cambridge textbook!
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In more concrete words, you are asked to show n = \cos^{-1} \frac 35, given the conditions a \cos \alpha = 1, a \cos (n+\alpha) = 5...
Jun 14, 2020
fan96
replied to the thread
Mechanics question
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Actually, the simplest way is to just get the answer from the back of the textbook, ask someone else who knows how to do it, or to...
May 1, 2020
fan96
replied to the thread
Binomial Help
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\binom{n}{2} \left(\frac{9}{10}\right)^{n-2} < \binom{n}{3}\left(\frac{9}{10}\right)^{n-3} \frac 1{10} Divide by (9/10)^{n-3}...
Apr 26, 2020
fan96
replied to the thread
"Describe the motion..." mechanics question
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Your reasoning is correct. Another way to look at it is the following: If O is any point that is not \pi/2 , then the particle will...
Apr 15, 2020
fan96
replied to the thread
HSC Maths Ext2 Questions + Answers
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When we discuss real-valued functions it's often convenient or more practical for us to take "continuous" to mean "continuous on...
Apr 7, 2020
fan96
replied to the thread
Maths neatness
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If your fraction stack is growing out of control, you can just get rid of the fraction entirely - write...
Apr 6, 2020
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