XpandNotes

exploring the intersection of technology and creativity

Positional Notation

The conversion of positional notation is quite important in computer science since the data are stored as binary signals in disks and memories. We must convert them into decimal so as to make use o...

Posted by blueskyson on February 15, 2020

Two Circles Touch Externally

This post is for solving the intersections of two circles. Suppose the radius of $ C_1 $ is $ r_1 $, and the radius of $ C_2 $ is $ r_2 $. Let $ θ $ be the angel between $ \overline{A C} $ and hor...

Posted by blueskyson on February 14, 2020