FP2.2.1 - Summation of simple finite series n 1 ∑

Summation of simple finite series n 1 ∑ using the method of differences.; Students should be able to sum series such as by r(r +1) r=1 1 1 1 using partial fractions such as = −. r(r +1) r r +1.

Use fp2.2.1 - summation of simple finite series n 1 ∑ to connect the rule to the data and decision in the question.

This matters because fp2.2.1 - summation of simple finite series n 1 ∑ determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply fp2.2.1 - summation of simple finite series n 1 ∑ to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: FP2.2.1 - Summation of simple finite series n 1 ∑ is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.