mscroggs.co.uk
mscroggs.co.uk

subscribe

Comment

Comments

Comments in green were written by me. Comments in blue were not written by me.
In number 4 what are we to take the difference between? Do you mean the difference between the original number and its reverse? If so when you add the difference back to the reverse you simply get the original number, which is ambiguous. I am not sure what you are asking us to do here.
Dan Whitman
on /blog/37
               
@Dan Whitman: Find the difference between the original number and the reverse of the original. Call this difference \(a\). Next add \(a\) to the reverse of \(a\)...
Matthew
on /blog/37
               
@Matthew: Thank you for the prompt response! It makes sense now and perhaps I should have read a little closer!
Dan Whitman
on /blog/37
               

Archive

Show me a random blog post
 2020 

Jul 2020

Happy ϕ+τ-5 Approximation Day!

May 2020

A surprising fact about quadrilaterals
Interesting tautologies

Mar 2020

Log-scaled axes

Feb 2020

PhD thesis, chapter ∞
PhD thesis, chapter 5
PhD thesis, chapter 4
PhD thesis, chapter 3
Inverting a matrix
PhD thesis, chapter 2

Jan 2020

PhD thesis, chapter 1
Gaussian elimination
Matrix multiplication
Christmas (2019) is over
 2019 
▼ show ▼
 2018 
▼ show ▼
 2017 
▼ show ▼
 2016 
▼ show ▼
 2015 
▼ show ▼
 2014 
▼ show ▼
 2013 
▼ show ▼
 2012 
▼ show ▼

Tags

light logs sport logic programming royal institution folding tube maps harriss spiral video games pizza cutting european cup sorting platonic solids golden ratio christmas card london craft wool matrix multiplication raspberry pi trigonometry php matrices football draughts dates bubble bobble matrix of minors radio 4 ucl folding paper national lottery asteroids python map projections pac-man simultaneous equations stickers oeis rhombicuboctahedron news pythagoras flexagons speed plastic ratio misleading statistics cambridge dragon curves graph theory mathsteroids exponential growth electromagnetic field final fantasy golden spiral braiding palindromes christmas dataset sobolev spaces machine learning reddit computational complexity manchester chalkdust magazine interpolation countdown inline code tennis arithmetic realhats rugby world cup puzzles binary talking maths in public reuleaux polygons noughts and crosses estimation convergence squares gerry anderson statistics weather station signorini conditions books triangles javascript go graphs the aperiodical bodmas royal baby data visualisation bempp chebyshev wave scattering data game of life hats london underground hexapawn finite element method accuracy martin gardner twitter ternary fractals games cross stitch chess determinants matt parker pi approximation day menace probability approximation manchester science festival numerical analysis phd polynomials curvature coins captain scarlet error bars sound hannah fry matrix of cofactors inverse matrices weak imposition tmip mathslogicbot advent calendar geometry game show probability gaussian elimination boundary element methods nine men's morris geogebra propositional calculus quadrilaterals mathsjam latex people maths a gamut of games big internet math-off pi frobel preconditioning

Archive

Show me a random blog post
▼ show ▼
© Matthew Scroggs 2012–2020