Math Problem Statement

Evaluate the limit using L'Hôpital's Rule: lim (x -> 0) [13x^3 / (sin(x) - x)].

Solution

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extracted_text = pytesseract.image_to_string(img) extracted_textThe image contains a limit problem that asks to evaluate a limit using L'Hôpital's Rule:

limx03xsin(x)x\lim_{x \to 0} \frac{3x}{\sin(x) - x}

To solve this, we can apply L'Hôpital's Rule, which is useful when evaluating limits of indeterminate forms like 00\frac{0}{0}.

Steps to Solve:

  1. Check the indeterminate form:
    As x0x \to 0, both the numerator 3x3x and the denominator sin(x)x\sin(x) - x approach 0, so we have the indeterminate form 00\frac{0}{0}, allowing us to apply L'Hôpital's Rule.

  2. Differentiate the numerator and the denominator:

    • Numerator: ddx[3x]=3\frac{d}{dx}[3x] = 3
    • Denominator: ddx[sin(x)x]=cos(x)1\frac{d}{dx}[\sin(x) - x] = \cos(x) - 1
  3. Evaluate the limit of the new fraction: limx03cos(x)1\lim_{x \to 0} \frac{3}{\cos(x) - 1} As x0x \to 0, cos(0)=1\cos(0) = 1, so the denominator cos(x)10\cos(x) - 1 \to 0. We still have an indeterminate form 30\frac{3}{0}.

  4. Conclusion: Since the limit of cos(x)1\cos(x) - 1 as x0x \to 0 approaches 0 from the negative side, the limit of the expression 3cos(x)1\frac{3}{\cos(x) - 1} approaches -\infty.

Thus, the limit is:

limx03xsin(x)x=\lim_{x \to 0} \frac{3x}{\sin(x) - x} = -\infty

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Math Problem Analysis

Mathematical Concepts

Limits
L'Hôpital's Rule
Indeterminate Forms

Formulas

L'Hôpital's Rule: lim (x -> c) f(x)/g(x) = lim (x -> c) f'(x)/g'(x) if it results in 0/0 or ∞/∞

Theorems

L'Hôpital's Rule

Suitable Grade Level

Grades 11-12 or College Calculus