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Author Topic: Crocodile Rock  (Read 2540 times)
TightEnd
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« on: October 09, 2015, 12:24:30 PM »
So manty students couldn't work this out, that in Scotland they had to lower the pass mark for higher maths

blonde can do better

Answers with working please. (tikay disqualified, he'll find it too easy)

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ripple11
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« Reply #1 on: October 09, 2015, 12:54:56 PM »
sigh......thought this was going to be about me and Suzie having so much fun.....
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mulhuzz
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« Reply #2 on: October 09, 2015, 01:12:03 PM »
Just so happens I did this this morning.

Will take a pic when I get back from lunch.

Stupid question mind. X being defined a a constant and then as a variable.
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mulhuzz
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« Reply #3 on: October 09, 2015, 03:10:42 PM »
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Scruffy as hell. But there we are.
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TightEnd
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« Reply #4 on: October 09, 2015, 04:23:20 PM »
solution also on you tube
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HutchGF
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« Reply #5 on: October 09, 2015, 04:36:42 PM »
Quote from: TightEnd on October 09, 2015, 12:24:30 PM
So manty students couldn't work this out, that in Scotland they had to lower the pass mark for higher maths

blonde can do better

Answers with working please. (tikay disqualified, he'll find it too easy)

 Click to see full-size image.


Without watching the video or Mr Mulhuzz's solution, is this essentially a stationary point question?

My A' level maths seems such a long time ago looking at this. Work out the max and min and then differentiate, right?
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mulhuzz
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« Reply #6 on: October 09, 2015, 05:00:44 PM »
Yup, then set differential to 0 and Bob is uncle.
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