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
∫ x^2 / √[16-9x^2] dx
November 4, 2025 at 5:49 AM
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
∫ 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.
I found your first puzzle easier to solve than your second puzzle, but I eventually was able to figure it out. I really like these puzzles a lot especially when only 8 or 9 equations are used. Can you solve mine? Digits -4, -3, -2, -1, 0, 1, 2, 3, 4 are disguised.
October 25, 2025 at 5:18 AM
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.)
(As usual please don’t help me, even if I ask myself a question. I want to do it myself.)
Y13 did their first set of integration looky-likeys in #MathsToday. Looking forward to lots more of this in the next few weeks!
The last one was a bit mean (I put it there to slow down the fast finishers) but they did manage it when I gave them the right substitution. #ALevelMaths
The last one was a bit mean (I put it there to slow down the fast finishers) but they did manage it when I gave them the right substitution. #ALevelMaths
October 20, 2025 at 9:26 PM
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.)
(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…
If it takes Elmo 1 1/2 minutes to build a snowman and Rocco takes 2 minutes to build a snowman, how fast can they build a snowman if they work together?
October 4, 2025 at 11:26 PM
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.
#MathsToday #ALevelMaths
Here's this week's Monday area problem:
Find the exact value of the green area.
Here's this week's Monday area problem:
Find the exact value of the green area.
September 23, 2025 at 7:20 AM
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.
September 17, 2025 at 10:26 AM
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)
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)
September 17, 2025 at 6:02 AM
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)
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)
(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.)
August 27, 2025 at 8:00 AM
(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…
August 27, 2025 at 7:51 AM
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…
August 22, 2025 at 11:24 AM
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!
July 24, 2025 at 1:35 AM
#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…
An Ailles Rectangle problem. Find the value of a°.
More an exercise in (trigonometry) language fluency than anything else. i.e. do you know how to interpret the terminology to be able to do it in your head.
@davidkbutler.bsky.social
#UKMathsChat #iTeachMaths
More an exercise in (trigonometry) language fluency than anything else. i.e. do you know how to interpret the terminology to be able to do it in your head.
@davidkbutler.bsky.social
#UKMathsChat #iTeachMaths
June 5, 2025 at 8:10 PM
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 …
What fraction of the triangle is shaded?
#geometrypuzzle
#geometrypuzzle
May 30, 2025 at 4:53 AM
Ok let me #TryMathsLive with this puzzle from @catrionaagg.bsky.social …
Ok let me #TryMathsLive with this from @mathforge.org …
Here's one that I had to double-check because I didn't believe the answer.
Consider a quadrilateral with corners at (0,0), (2,0), (a,b), and (0,2) where (a,b) is such that a, b > 0 and a + b > 2 (this is just to ensure it's convex).
What's its area, in terms of a and b?
#UKMathsChat #mathsky
Consider a quadrilateral with corners at (0,0), (2,0), (a,b), and (0,2) where (a,b) is such that a, b > 0 and a + b > 2 (this is just to ensure it's convex).
What's its area, in terms of a and b?
#UKMathsChat #mathsky
May 29, 2025 at 5:50 PM
Ok let me #TryMathsLive with this from @mathforge.org …
Ok I will #TryMathsLive with this from @unsolvedmre.bsky.social, with a push from @mathforlove.bsky.social.
(Note it’s not quite live, since we did it at One Hundred Factorial yesterday, but I have to reconstruct it from scratch so it’s nearly live.)
(Note it’s not quite live, since we did it at One Hundred Factorial yesterday, but I have to reconstruct it from scratch so it’s nearly live.)
The sum of the terms in a particular arithmetic sequence is 75.
If you only sum EVERY OTHER term (starting at and ending on the same terms as before), you get 39.
What is the sum of EVERY THIRD term (again, starting at and ending on the same terms)?
#iTeachMath
If you only sum EVERY OTHER term (starting at and ending on the same terms as before), you get 39.
What is the sum of EVERY THIRD term (again, starting at and ending on the same terms)?
#iTeachMath
May 21, 2025 at 4:21 PM
Ok I will #TryMathsLive with this from @unsolvedmre.bsky.social, with a push from @mathforlove.bsky.social.
(Note it’s not quite live, since we did it at One Hundred Factorial yesterday, but I have to reconstruct it from scratch so it’s nearly live.)
(Note it’s not quite live, since we did it at One Hundred Factorial yesterday, but I have to reconstruct it from scratch so it’s nearly live.)
@davidkbutler.bsky.social this seems like a perfect question for #trymathslive.
I'd do it myself, but I need to go to bed!
I'd do it myself, but I need to go to bed!
The sum of the terms in a particular arithmetic sequence is 75.
If you only sum EVERY OTHER term (starting at and ending on the same terms as before), you get 39.
What is the sum of EVERY THIRD term (again, starting at and ending on the same terms)?
#iTeachMath
If you only sum EVERY OTHER term (starting at and ending on the same terms as before), you get 39.
What is the sum of EVERY THIRD term (again, starting at and ending on the same terms)?
#iTeachMath
May 21, 2025 at 4:59 AM
@davidkbutler.bsky.social this seems like a perfect question for #trymathslive.
I'd do it myself, but I need to go to bed!
I'd do it myself, but I need to go to bed!
David, I saw your #TryMathsLive, so went to solve!
Here's my reasoning... {Sorry I haven't read your intermediate posts so I didn't spoil my problem solving}
Clearly 2025 is sum of 2 consec integers 1012 + 1013 ✅
3 integers: n + n+1 + n+2 = 2025
3n + 3 = 2025
3n = 2022
n = 674
674 + 675 + 676 ✅
Here's my reasoning... {Sorry I haven't read your intermediate posts so I didn't spoil my problem solving}
Clearly 2025 is sum of 2 consec integers 1012 + 1013 ✅
3 integers: n + n+1 + n+2 = 2025
3n + 3 = 2025
3n = 2022
n = 674
674 + 675 + 676 ✅
May 12, 2025 at 1:08 AM
David, I saw your #TryMathsLive, so went to solve!
Here's my reasoning... {Sorry I haven't read your intermediate posts so I didn't spoil my problem solving}
Clearly 2025 is sum of 2 consec integers 1012 + 1013 ✅
3 integers: n + n+1 + n+2 = 2025
3n + 3 = 2025
3n = 2022
n = 674
674 + 675 + 676 ✅
Here's my reasoning... {Sorry I haven't read your intermediate posts so I didn't spoil my problem solving}
Clearly 2025 is sum of 2 consec integers 1012 + 1013 ✅
3 integers: n + n+1 + n+2 = 2025
3n + 3 = 2025
3n = 2022
n = 674
674 + 675 + 676 ✅
Me whenever @davidkbutler.bsky.social breaks out #TryMathsLive
May 11, 2025 at 10:35 PM
Me whenever @davidkbutler.bsky.social breaks out #TryMathsLive
I shall #TryMathsLive with this from @unsolvedmre.bsky.social …
In how many ways can 2025 be written as a sum of two or more consecutive positive integers?
May 11, 2025 at 9:59 PM
I shall #TryMathsLive with this from @unsolvedmre.bsky.social …
Ooh fun! Time to #TryMathsLive
1/(31+1/31)+31/(1+1/961)
I can multiply top and bottom of each fraction by the bottom of the fraction-within-a-fraction.
1/(31+1/31)+31/(1+1/961)
= 31/(31×31+1)+31×961/(961+1)
1/(31+1/31)+31/(1+1/961)
I can multiply top and bottom of each fraction by the bottom of the fraction-within-a-fraction.
1/(31+1/31)+31/(1+1/961)
= 31/(31×31+1)+31×961/(961+1)
March 31, 2025 at 7:01 AM
Ooh fun! Time to #TryMathsLive
1/(31+1/31)+31/(1+1/961)
I can multiply top and bottom of each fraction by the bottom of the fraction-within-a-fraction.
1/(31+1/31)+31/(1+1/961)
= 31/(31×31+1)+31×961/(961+1)
1/(31+1/31)+31/(1+1/961)
I can multiply top and bottom of each fraction by the bottom of the fraction-within-a-fraction.
1/(31+1/31)+31/(1+1/961)
= 31/(31×31+1)+31×961/(961+1)
Nice to see #TryMathsLive ! Thanks for this.
I do enjoy seeing different methods.
You started with numbers adding to 41 and checked the products.
I began with factor pairs for 288. Because 41 is odd, one of the factors must be odd, and knowing that 9 is a factor of 144, I narrowed down to 9x32.
I do enjoy seeing different methods.
You started with numbers adding to 41 and checked the products.
I began with factor pairs for 288. Because 41 is odd, one of the factors must be odd, and knowing that 9 is a factor of 144, I narrowed down to 9x32.
March 23, 2025 at 7:50 PM
Nice to see #TryMathsLive ! Thanks for this.
I do enjoy seeing different methods.
You started with numbers adding to 41 and checked the products.
I began with factor pairs for 288. Because 41 is odd, one of the factors must be odd, and knowing that 9 is a factor of 144, I narrowed down to 9x32.
I do enjoy seeing different methods.
You started with numbers adding to 41 and checked the products.
I began with factor pairs for 288. Because 41 is odd, one of the factors must be odd, and knowing that 9 is a factor of 144, I narrowed down to 9x32.
March 23, 2025 at 4:27 PM
I wasn’t there for the end of this game and I’d like to #TryMathsLive to see if I can figure out how they got to the final list of digits.
March 19, 2025 at 7:24 AM
I wasn’t there for the end of this game and I’d like to #TryMathsLive to see if I can figure out how they got to the final list of digits.
c) Explain how you answered part b.
d) What other numerators "work"?
e) Consider how this example was constructed, and see if you can make a similar one (in a base ≠ 2 or 3).
... phew! i haven't proofread and bsky has no edit button, but those are my #TryMathsLive ideas for the day
#iTeachMath ♾️ 🧮
d) What other numerators "work"?
e) Consider how this example was constructed, and see if you can make a similar one (in a base ≠ 2 or 3).
... phew! i haven't proofread and bsky has no edit button, but those are my #TryMathsLive ideas for the day
#iTeachMath ♾️ 🧮
February 1, 2025 at 4:46 PM
c) Explain how you answered part b.
d) What other numerators "work"?
e) Consider how this example was constructed, and see if you can make a similar one (in a base ≠ 2 or 3).
... phew! i haven't proofread and bsky has no edit button, but those are my #TryMathsLive ideas for the day
#iTeachMath ♾️ 🧮
d) What other numerators "work"?
e) Consider how this example was constructed, and see if you can make a similar one (in a base ≠ 2 or 3).
... phew! i haven't proofread and bsky has no edit button, but those are my #TryMathsLive ideas for the day
#iTeachMath ♾️ 🧮