Yesterday you looked at the basics of arithmetic sequences. Today we look at how these sequences can be written using sigma notation. The video below shows what sigma notation is and the exam questions below will be good practice.
Now try these exam questions. Any questions then just ask on our Facebook support group.
January 2010 Question 4 – answer here
June 2014 Question 8 – answer here
For arithmetic sequences and series you need to know how to use the formulae in the formula book.
A lot of questions will involve forming and solving simultaneous equations as shown in the video and the second exam question below.
January 2008 Question 2 – answer here
June 2006 Question 3 – answer here