Domain of Definition Course
Master domains of definition with confidence. This course sharpens your skills on roots, logs, and rational functions, clarifies discontinuities, and builds precise interval notation—ideal for mathematics professionals who need clean, error-free analysis.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
The Domain of Definition Course gives you a clear, practical toolkit for identifying valid inputs of functions in real-number settings. You will review domain notation, tackle rational, root, and logarithmic expressions, and work through compositions with multiple constraints. With focused practice, error-spotting strategies, and compact reference rules, you quickly build confidence for accurate, efficient problem solving.
Elevify advantages
Develop skills
- Determine domains: express final answers in set, interval, and inequality form.
- Analyze rational domains: factor, cancel, and detect removable discontinuities.
- Solve root and log constraints: handle radicand and argument inequalities fast.
- Combine nested restrictions: compute domains of compositions and complex formulas.
- Avoid domain errors: spot sign slips, zero denominators, and misuse of inequalities.
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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