mathinsight.org 的前十大競爭對手

tutorial.math.lamar.edu

welcome to my math notes site. contained in this site are the notes (free and downloadable) that i use to teach algebra, calculus (i, ii and iii) as well as differential equations at lamar university. the notes contain the usual topics that are taught in those courses as well as a few extra topics that i decided to include just because i wanted to. there are also a set of practice problems, with full solutions, to all of the classes except differential equations. in addition there is also a selection of cheat sheets available for download.

math.libretexts.org

The LibreTexts libraries collectively are a multi-institutional collaborative venture to develop the next generation of open-access texts to improve postsecondary education.

math.stackexchange.com

Q&A for people studying math at any level and professionals in related fields

mathsisfun.com

Pythagoras. Over 2000 years ago there was an amazing discovery about triangles: When a triangle has a right angle (90°) ...

khanacademy.org

Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

mathworld.wolfram.com

A connected graph G is distance-regular if for any vertices x and y of G and any integers i,j=0, 1, ...d (where d is the graph diameter), the number of vertices at distance i from x and distance j from y depends only on i, j, and the graph distance between x and y, independently of the choice of x and y. In particular, a distance-regular graph is a graph for which there exist integers b_i,c_i,i=0,...,d such that for any two vertices x,y in G and distance i=d(x,y), there are exactly c_i...

chilimath.com

Learn math at your own pace for FREE with ChiliMath.com! Perfect resource for students, parents, and teachers to build confidence in algebra/math. Free math lessons for everyone!

purplemath.com

Purplemath (PM) kinda happened by accident. Read here about PM's author, Elizabeth Stapel, and about Purplemath, including the origin of its name.

kristakingmath.com

Hi, I'm Krista. Your geeky, trusty math tutor—from basic middle school classes to advanced college calculus. Access to every course and lesson you need to ace your class!