Computing Limits — Question 4

Section 2-5 · Calculus pages 297–298

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Question 4

Evaluate the limit: limx→0sin⁡(3x)x\lim_{x \to 0} \frac{\sin(3x)}{x}

Question 4 - Solution

We are asked to evaluate: limx→0sin⁡(3x)x\lim_{x \to 0} \frac{\sin(3x)}{x}

Step 1: Use standard limit identity

Recall the standard identity: limx→0sin⁡(kx)x=k\lim_{x \to 0} \frac{\sin(kx)}{x} = k

This applies directly here with k=3k = 3.

limx→0sin⁡(3x)x=3\lim_{x \to 0} \frac{\sin(3x)}{x} = 3

Answer: 3\boxed{3}