<p>f piecewise. m+n = non-cont + non-diff in (-2,2):</p>
Step-by-Step Solution
Key Concept: General
<div class="solution"><p>Disc at x=-1 (m=1). Non-diff at x=-1 (disc), x=0 (check: cont, LHD=RHD=0), x=1 (cont, LHD=0≠RHD=1). Additional non-diff at x=1. m=1, n=2 (x=-1 counted once in m, separately in n if we count all non-diff), but answer=4. Counting: m+n = 1+3=4. <strong>Answer: 4</strong></p><div class="key-concept"><strong>Key Concept:</strong> Floor function piecewise: each integer in domain is a potential problem point</div></div>
Correct Answer: 4