**Sequences**

Arithmetic sequences:

Geometric sequences 1:

Geometric sequences 2:

Sigma Notation:

Finding the sum of an arithmetic series:

Finding the sum of a geometric series:

Finding the sum of a geometric series 2:

Find the sum to infinity of a geometric series:

**Logs**

Simplifying indices:

Solving indices equations:

Introduction to logs:

An introduction to log laws:

Laws of logs to simplify:

More on log laws to simplify:

Solving equations using logs:

Solving equations using the natural log (lnx):

Change of base law:

Radioactive decay:

**Binomial Theorem**

Binomial expansion:

Another binomial expansion example:

Binomial with 2 brackets:

N choose r formula:

IB SL Algebra Playlist:

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## 2 comments

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January 14, 2016 at 2:27 am

WiktoriaShouldn’t it be ‘-27x to the 2nd power times y’ in the last video = example 2?

March 2, 2016 at 5:59 pm

AlgebraHello,

I just want to say that I’m loving math and like to help people to learn it.

I know that many people struggle with Algebra, so I created some calculators to help students.

You can check them out here:

Synthetic Division Calculator – http://www.emathhelp.net/calculators/algebra-1/synthetic-division-calculator/

Partial Fraction Decomposition Calculator – http://www.emathhelp.net/calculators/algebra-2/partial-fraction-decomposition-calculator/

Factoring Calculator – http://www.emathhelp.net/calculators/algebra-2/factoring-calculator/

Polynomial Calculator – http://www.emathhelp.net/calculators/algebra-1/polynomial-calculator/

Simplify Calculator – http://www.emathhelp.net/calculators/algebra-2/simplify-calculator/

Equation Calculator – http://www.emathhelp.net/calculators/algebra-2/equation-solver-calculator/

Quadratic Equation Calculator – http://www.emathhelp.net/calculators/algebra-1/quadratic-equation-calculator-solver/

And general page with all calculators is http://www.emathhelp.net/calculators/other/math-problem-solver/

Might be worth adding to the site or recommending to students.

Either way, have a great day!

Best wishes,

Paul