What is Factorising? Factorising is the process of writing an algebraic expression as a product of factors – similar to how the number 15 can be written as 5 x 3, where 5 and 3 are both factors of 15. Factorising algebraic expressions involves using one or more...

What is the Chain Rule? The Chain Rule is used to differentiate composite functions. A Composite Function is a ‘function inside a function’ but they can take many forms. The challenge with The Chain Rule is not just using the rule, but knowing when it can...

The Problem Evaluate the infinite series FollowFollowFollow If you’re not familiar with evaluating infinite series this problem may seem odd. Essentially it’s saying to imagine that the terms of the series continue indefinitely (according to the rule for...

The Problem Find the sum to infinity of 2n/(n+1)! This infinite series looks like this: FollowFollowFollow If you’re not familiar with infinite series this problem may seem strange. Essentially it’s saying to imagine that the terms of the series continue...

Introduction Before we get into differentiation questions and answers, some background (yes, you may skip past this intro!). In the 17th century Mathematicians were working on a range of problems and attempting to solve unanswered questions – as Mathematicians...

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