Hit a 9 in GCSE Maths with hard, original problems to push your limits
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- เผยแพร่เมื่อ 15 ต.ค. 2024
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Get top marks in GCSE maths - by altitude training! Work with me through extra hard problems using nothing but your GCSE maths skills and knowledge, so that the problems you face in the exam will be easier.
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Thank you so much for your video! At the moment, I'm getting about 70-ish marks in my Maths papers so i don't know if I am someone suited for this video. However, I really enjoyed giving your question a try (I got it wrong the first time) and I was hoping to see more of them. The link in your description doesn't seem to work for the worksheets. Do you mind posting through another link so that I could have a look? Thank you so much and please keep on posting these videos - hoping to keep my brain occupied in the 3 months I'll have after my GCSEs!
And thanks for your comment! I've fixed the link now, much appreciated that you pointed that out.
www.alexdutton.me/store/p/gcse-maths-extra-hard-problems
Keep subscribed and you'll see I post a new maths challenge question every Monday.
Sorry to add on, after looking at the second question I was trying to find a way using algebra to find the answer. I know you mentioned the existence of an equation which can help find the answer. Could you please tell me what it is too? I don't prefer the current method since I just feel like it's 'brute force' to find the answer. Thanks!
en.wikipedia.org/wiki/Chinese_remainder_theorem
@@eternity_hour Cheers!
i am getting this fucking 9 man
Good luck, with that attitude you can’t go wrong!
I am working hard for this 9 thanks for this video 🎉
You got this!
Thank you so much!
How would you work out the second question using a formula?
When I said formula, I should have said algorithm. There are several and are listed here:
en.wikipedia.org/wiki/Chinese_remainder_theorem
It’s a very powerful tool and result which extends far beyond integers
need the 8/9 so i can do further for A-level
Good luck, further maths is a great A-level that will push your maths to 1st year degree level in some places so be prepared!
@@eternity_hour im not going to lie edexcel ruined me hard today i might have scraped an 8 so i gotta score high in paper 2 and 3 to guarantee further for a-level
Thx!
glad I could help
can someone explain the 1-root(1+root2) * -root2 = root(2=2root2) please
You have to rationalise the denominator twice, but there is some nice simplification.
Great vid!
Shouldn’t the answer for the first one be:
-_/2 + _/(2+_/2)
_________________
2
That’s what I was thinking how he got_/ (2+2_/2)
let me check, thanks for looking
isn’t this what I wrote?
@@eternity_hour I don’t believe so as you wrote:
2+2_/2 not 2+_/2
I see now. when you multiply by root2, inside the first root this appears as a 2. So sqrt(1+sqrt(2)) * sqrt(2) = sqrt(2*(1+sqrt(2)) = sqrt(2+ 2sqrt(2))
www.wolframalpha.com/input?i=sqrt%281%2Bsqrt2%29+*+sqrt%282%29