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 accurate, mistake-free work in real-number analysis.

from 4 to 360h flexible workload
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 precise and swift problem-solving.
Elevify advantages
Develop skills
- Determine domains using set, interval, and inequality formats.
- Analyse rational domains by factoring, cancelling, and spotting removable discontinuities.
- Tackle root and log constraints with quick radicand and argument inequality handling.
- Manage nested restrictions for compositions and complex formulae.
- Prevent domain mistakes like sign errors, 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 workload.What our students say
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