Domain of Definition Course
Gain mastery over function domains confidently. Sharpen abilities in roots, logs, and rational functions, understand discontinuities clearly, and perfect interval notation—perfect for maths experts seeking precise, error-free work in real-number analysis.

flexible workload of 4 to 360h
valid certificate in your country
What will I learn?
This course equips you with practical tools to find valid inputs for functions using real numbers. You'll master domain notation, handle rational, root, and log expressions, and manage compositions with various constraints. Through targeted exercises, error detection methods, and quick reference guides, you'll gain confidence for fast and accurate solutions.
Elevify advantages
Develop skills
- Determine domains using set, interval, and inequality formats.
- Analyse rational domains by factoring, cancelling, and spotting removable discontinuities.
- Solve root and log constraints quickly with radicand and argument inequalities.
- Combine nested restrictions for compositions and complex formulas.
- Avoid common domain errors like sign mistakes, zero denominators, and inequality misuse.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workloadWhat our students say
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