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Statement -1 : lim(xrarralpha) sqrt(1-co...

Statement -1 : `lim_(xrarralpha) sqrt(1-cos 2(x-alpha))/(x-alpha)` does not exist.
Statement-2 : `lim_(xrarr0) (|sin x|)/(x)` does not exist.

A

Statement -1 is true, Statement-2 is true,, Statement-2 is a correct explanation for Statement-1.

B

Statement-1 is true, Statement-2 is true, Statement-2 is not a correct explanation for statement -1.

C

Statement-1 is true, Statement-2 is False.

D

Statement-1 is False, Statement-2 is true.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to analyze the two statements separately and determine their validity. ### Statement 1: \[ \lim_{x \to \alpha} \frac{\sqrt{1 - \cos(2(x - \alpha))}}{x - \alpha} \text{ does not exist.} \] **Step 1: Simplify the expression inside the limit.** Using the identity \(1 - \cos(2\theta) = \sin^2(\theta)\), we can rewrite the expression as follows: \[ 1 - \cos(2(x - \alpha)) = \sin^2(x - \alpha). \] Thus, we can rewrite the limit: \[ \lim_{x \to \alpha} \frac{\sqrt{\sin^2(x - \alpha)}}{x - \alpha}. \] **Step 2: Simplify further.** Since \(\sqrt{\sin^2(x - \alpha)} = |\sin(x - \alpha)|\), we have: \[ \lim_{x \to \alpha} \frac{|\sin(x - \alpha)|}{x - \alpha}. \] **Step 3: Analyze the limit.** As \(x \to \alpha\), \(x - \alpha \to 0\). We can analyze the left-hand limit (LHL) and right-hand limit (RHL): - For \(x \to \alpha^+\) (approaching from the right): \[ \lim_{x \to \alpha^+} \frac{\sin(x - \alpha)}{x - \alpha} = 1. \] - For \(x \to \alpha^-\) (approaching from the left): \[ \lim_{x \to \alpha^-} \frac{-\sin(x - \alpha)}{x - \alpha} = -1. \] Since the left-hand limit and right-hand limit are not equal, the limit does not exist. ### Conclusion for Statement 1: The statement is **true**: \[ \lim_{x \to \alpha} \frac{\sqrt{1 - \cos(2(x - \alpha))}}{x - \alpha} \text{ does not exist.} \] --- ### Statement 2: \[ \lim_{x \to 0} \frac{|\sin x|}{x} \text{ does not exist.} \] **Step 1: Analyze the limit.** We can analyze this limit by considering the behavior of \(|\sin x|\) as \(x\) approaches \(0\): - For \(x \to 0^+\): \[ \lim_{x \to 0^+} \frac{\sin x}{x} = 1. \] - For \(x \to 0^-\): \[ \lim_{x \to 0^-} \frac{-\sin x}{x} = -1. \] Since the left-hand limit and right-hand limit are not equal, the limit does not exist. ### Conclusion for Statement 2: The statement is **true**: \[ \lim_{x \to 0} \frac{|\sin x|}{x} \text{ does not exist.} \] ### Final Conclusion: Both statements are true, and Statement 2 serves as a correct explanation for Statement 1. ---

To solve the problem, we need to analyze the two statements separately and determine their validity. ### Statement 1: \[ \lim_{x \to \alpha} \frac{\sqrt{1 - \cos(2(x - \alpha))}}{x - \alpha} \text{ does not exist.} \] **Step 1: Simplify the expression inside the limit.** ...
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