# Welcome to Kobby's Online Math Notes.

Here, you will find notes on various math topics from the junior high school level, through senior high school, to the college or university level. Topics include algebra, geometry, trigonometry, calculus, and probability. You will also find PDFs of notes and worksheets on some topics.

# Notes divided into three broad categories

The notes are classified into three broad categories:

Junior High Math

High School Core Math

High School Advanced Math

Junior High Math covers math topics for elementary and junior high school, High School Core Math covers math topics usually considered compulsory for all high school students, and High School Advanced Math covers math topics for high school students who would pursue math in the future.

# Sample math notes

The relationship between logarithms and indices

The laws of indices

Sums of other types of series

Sigma notation

The sum to infinity of a geometric progression

The sum of a geometric progression

Geometric progressions

The sum of an arithmetic progression

Definition of a sequence and a series

Goldbach's conjecture