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Exercices

Exercises that make the theory stick

Use the quizzes for instant correction, revisit the concepts behind wrong answers, and apply the calculators to check your working. Practice is deliberately short and repeatable.

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A useful routine. Read the definition, work through the numerical example without looking at the answer, then check with the matching calculator. If the result disagrees, inspect the unit conversion and the formula’s conditions before assuming the calculator is wrong.
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