Practical Class 1. Introduction to FSV

This practical class reinforces theoretical concepts through hands-on problem-solving. The session focuses on three key skills: finding domains of definition for functions with square roots, logarithms, and fractions by identifying constraints like non-negative radicands and non-zero denominators; computing limits at points where direct substitution fails; and investigating continuity. A major emphasis is placed on evaluating limits, where students learn why checking multiple paths of approach is essential—different paths yielding different values proves that a limit does not exist. Polar coordinates are introduced as a technique for certain limits. The class also exami…