Differentiation
Basics of Differentiation
- Understand Differentiation as the process of finding the derivative, or rate of change, of a function.
- Familiarise with the term derivative and its notations - ‘f’(x) or df(x)/dx.
- Be aware that the derivative of a constant is zero and the derivative of a linear term is its coefficient.
Key Rules
- Memorise the Power Rule: The derivative of x^n is n*x^(n-1).
- Comprehend Chain Rule for finding the derivative of a composite function, denoted as d/dx[ f(g(x)) ].
- Grasp the Product Rule applicable to the derivative of a product of two or more functions.
- Get a handle on the Quotient Rule for finding the derivatives of quotients of functions.
Context and Application
- Appreciate that differentiation is used to solve real-life problems including optimisation and rates of change.
- Know that differentiation from first principles is based on the idea of limits and is a proof for differentiating standard functions.
- Understand how to find the equation of the tangent to a curve at a given point using differentiation.
- Be able to use differentiation to determine turning points on the curve, identifying local maxima, minima, and points of inflection.
Advanced Differentiation
- Understand how to differentiate exponential functions and log functions.
- Recognise that the chain rule can be used to calculate the derivative of functions involving trigonometry and inverse functions.
- Be capable of differentiating parametric equations using parametric differentiation.
Practice and Revision
- Regularly tackle past papers, as the process makes a significant contribution to understanding and retention.
- Expose yourself to a wide array of questions - straightforward, complex, abstract.
- Occasionally study and solve problems in groups for a higher chance of understanding challenging concepts.
- Remain persistent and patient when tackling complex differentiation problems.