Limits, Continuity & Differentiability
General
Grade 12

Question:

<p><span class="math-inline">\(f(x)=[4x](x-\frac{1}{4})^2(x-\frac{1}{2})\)</span>. Which TRUE?</p>
A
B
C
D

Step-by-Step Solution

Key Concept: General
<div class="solution"><p>Disc only at x=3/4 (where [4x] jump not cancelled). A: disc at 1 point ✓. B: non-diff at 1 point (x=3/4) ✓. <strong>Answer: (A),(B)</strong></p><div class="key-concept"><strong>Key Concept:</strong> GIF jump × zero factor = continuity preserved at that point</div></div>
Correct Answer: A,B

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