Math Problem Statement

Evaluate the limit: lim (x -> 0) sin(3x) / x

Solution

The given expression asks for the limit:

limx0sin(3x)x\lim_{{x \to 0}} \frac{\sin(3x)}{x}

To solve this limit, we can use a standard trigonometric limit result:

limx0sin(kx)x=k\lim_{{x \to 0}} \frac{\sin(kx)}{x} = k

for any constant kk. In our case, k=3k = 3, so:

limx0sin(3x)x=3\lim_{{x \to 0}} \frac{\sin(3x)}{x} = 3

Thus, the value of the limit is:

3\boxed{3}

Would you like more details or have any questions?

Here are 5 related questions:

  1. How does the limit limx0sin(x)x=1\lim_{{x \to 0}} \frac{\sin(x)}{x} = 1 help in this problem?
  2. What is the geometric interpretation of the limit of sin(x)x\frac{\sin(x)}{x} as xx approaches 0?
  3. Can L'Hôpital's Rule be used to solve this limit, and if so, how?
  4. How do limits involving trigonometric functions behave near 0?
  5. What other common limits should be memorized for solving calculus problems?

Tip: Memorizing key trigonometric limits, such as limx0sin(x)x=1\lim_{{x \to 0}} \frac{\sin(x)}{x} = 1, can save time in solving many limit problems!

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Calculus
Limits
Trigonometric Limits

Formulas

lim (x -> 0) sin(kx) / x = k

Theorems

Standard Trigonometric Limits

Suitable Grade Level

Grades 10-12