I think I will #TryMathsLive on this problem from @catrionaagg.bsky.social

#TryMathsLive!
Let me see…

Original post on mathstodon.xyz

I should have tagged this #trymathslive, like @DavidKButler does on BSky.

This little thread is because I want to add another feature to a very back-burner paper with a coauthor in functional or global analysis or something involving nasty infinite-dimensional vector spaces.

But you have to […]

I shall #TryMathsLive with this from @stevemaths.bsky.social, but not yet. Maybe in about 8 hours’ time.
(As usual I want no hints please. I want to do it myself.)

So X = 10 and Y = 15, n = 25 and k = 23 check it works -->
165x + 166y = k•180
165•10 + 166•15 = 4140 = 23•180
A 25-gon can have angles only of 165° and 166°
Thanks Matt @unsolvedmre.bsky.social & David! @davidkbutler.bsky.social
#TryMathsLive

Hi @davidkbutler.bsky.social , I waited til your #TryMathsLive was done before posting mine.
@unsolvedmre.bsky.social I really like this problem:

If a polygon only has two distinct interior angle sizes: 165° & 166°, how many sides does it have?

I begin with: sum of int <s is a multiple of 180°

Ooh! Fun. I will do a #TryMathsLive on this from @unsolvedmre.bsky.social ...

YES! Love when you #TryMathsLive !! 🙌

Well, how about I #TryMathsLive on this problem?

Ok I am going to do a #TryMathsLive wit this from @catrionaagg.bsky.social. I will do it in short bursts, so know that my silence is not a request for help, it just means I’m doing something else for a while. (Indeed, in general, all questions are to myself and are also not a request for help.)

Yo following @davidkbutler.bsky.social let's #trymathslive.

Time for a #TryMathsLive!

Gonna #TryMathsLive ... usual rules (no hints).

M is the midpoint of AB, so OM is ½a+½b.

P divides OM in the ratio 3:2, so OP = ⅗OM = 3(a+b)/10

AP = OP - OA = 3(a+b)/10 - a = (3b-7a)/10

So the line through A and P has equation a + λ(3b-7a)/10

I am going to #TryMathsLive with this from PST Brandon, shared by @johngolden.bsky.social. But not yet. Maybe in about 10 hours' time. Depends how long it takes me to get a particular job done.

I'm going to try and type you my thoughts live so you can see what I'm thinking. I hope this will be more useful to getting you started than a worked solution. I don't have a calculator on me so I haven't actually tried to work any of this out - it's possible that my approach to a particular part doesn't work! But the 'show that' in part (iii) is a nice way for you to check whether things are going well up to that point. I'd advise you to only read a bit at a time, then try what you can, and come back to read the next bit if you get stuck. Before part (i), they've mentioned mass, speed, force and power. In particular, seeing speed and power mentioned together always makes me want to use the formula P=Fv. Given that this part is only 2 marks, I suspect I won't have to do much more than that. Before part (ii), they've mentioned moving under gravity - given that I'm primed by part (i) that this is a Work/Energy/Power question [yes, I know this is a whole W/E/P assignment, but in an exam I wouldn't have that extra context - but even exam questions are often predominantly drawn from a single topic] that makes me think of GPE. They also mention moving against resistance, which makes me think of WD = Fd. So already I'm thinking I'll start by trying to set up the energy buckets for the car at P and Q. I'm told the height and speed at each of them, which means I can calculate GPE and KE using the mass from the first part. I'm also told how far the car travels, which I can use as d in WD=Fd. In fact, part (ii) only asks for GPE and KE, so I don't need to use WD=Fd at all.

I tried something different to help an #ALevelMaths student who was stuck with a question: instead of telling them what to do, I wrote down my thoughts about how I would solve a question (kind of like @davidkbutler.bsky.social does with #TryMathsLive, except I never actually did the question).

#TryMathsLive

s/o @davidkbutler.bsky.social!

Trig substitution is amazing and all, but I want to try one without it and see if it works. So let me #TryMathsLive on this one:
∫ x^2 / √[16-9x^2] dx

I’m going to #TryMathsLive with this problem from @findthefactors.bsky.social, created using @transum.bsky.social’s Digimoji, which was inspired by my game Digit Disguises.

Ok I want to #TryMathsLive with that last integral from @catrionaagg.bsky.social.

(As usual please don’t help me, even if I ask myself a question. I want to do it myself.)

I’m going to #TryMathsLive with this one from @howiehua.bsky.social. Let’s see…

Ok I really want to #TryMathsLive on this with Green’s Theorem. I have no idea what the kids in A-level maths learn for areas enclosed in parametric curves and I don’t care. I want to use Green’s Theorem.

So cool to see someone do #TryMathsLive with one of my problems! Thank you so much! And I’m glad you’re enjoying it. I hope you find this having had a great sleep.

What a strange and delightful puzzle!

I have no choice but to #trymathslive with it.

(Bearing in mind that it's late and I may need to leave suddenly to go sleep)

Let's do this #TryMathsLive...

(If you’ve never seen me do a #TryMathsLive, I just need to tell you now that me expressing uncertainty is not a request for help. If I want help I will be explicit in asking for it.)

I shall #TryMathsLive with this from @paddymacmahon.com. Here we go…

Ok a challenge that I made for myself: Knowing that each colour of Cuisenaire rod is a different length, and that the faces add to 100, could you, without seeing the pictures, figure out how long each rod was just from the ALT texts? I will #TryMathsLive and see how I go…

#TryMathsLive is amazing, and more mathematicians and math educators should participate!

Well @segarrogers.bsky.social has put out the challenge, so I have to #TryMathsLive now…

Ok let me #TryMathsLive with this puzzle from @catrionaagg.bsky.social …