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Wolfram U

[WSG25] Daily Study Group: Problem Solving for Competitive Math

Shenghui Yang, WOLFRAM
Posted 4 months ago
POSTED BY: Shenghui Yang
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Hi there! I've already attended all 5 sessions plus I've passed the quiz too. When can i expect my certificate? Thanks
POSTED BY: Syed Ramis Hussain Zaidi
POSTED BY: Christine Owens
POSTED BY: Syed Ramis Hussain Zaidi
POSTED BY: Christine Owens
Robert Martin
Robert Martin
Posted 3 months ago

I don't see Friday's Notebook in the downloads.
POSTED BY: Robert Martin

It should be in the downloading material section for this course.
POSTED BY: Shenghui Yang
Artur R Piekosz
Artur R Piekosz
Posted 3 months ago

Where can problems in geometry be found?
POSTED BY: Artur R Piekosz

I have not covered problems in Euclidean geometry in this series of lecture.
POSTED BY: Shenghui Yang
Artur R Piekosz
Artur R Piekosz
Posted 3 months ago

Is the following place a good choice or one can easily find a better one?

https://artofproblemsolving.com/online

Geometry probably there:

artofproblemsolving.com/community/c4t48f4_geometry
POSTED BY: Artur R Piekosz

You can also google "Sharygin geometric olympiad". This contest has a good selection of geometric problems.

POSTED BY: Shenghui Yang
Robert Martin
Robert Martin
Posted 3 months ago

I looked ahead a little at today's Algebra Notebook. I believe that there is an error in the code for Selected Problems 1.1.

I believe that eq1=Sum[a+k*d,{k,1,50}]==200 should be eq1=Sum[a+k*d,{k,0,49}]==200

and eq2 = Sum[a + k*d, {k, 51, 100}] == 2700 should be eq2 = Sum[a + k*d, {k, 50, 99}] == 2700
POSTED BY: Robert Martin

Thanks for pointing out. Either shift the range like what your have done or use $(k-1)*d$ to keep the current range, or make $a+d$ as the first item. I have updated my notes.
POSTED BY: Shenghui Yang
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