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AP EAMCET · Maths · Limits

\(\lim _{x \rightarrow 0} \frac{x^2 \sin ^2(3 x)+\sin ^4(6 x)}{(1-\cos 3 x)^2}=\)

  1. A \(\frac{580}{9}\)
  2. B \(\frac{145}{3}\)
  3. C \(\frac{580}{3}\)
  4. D \(\frac{145}{9}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\frac{580}{9}\)

Step-by-step Solution

Detailed explanation

\(\lim _{x \rightarrow 0} \frac{x^2 \sin ^2(3 x)+\sin ^4(6 x)}{(1-\cos 3 x)^2} = \lim _{x \rightarrow 0} \frac{\left(\frac{\sin (3 x)}{x}\right)^2+\left(\frac{\sin (6 x)}{x}\right)^4}{\left(\frac{1-\cos 3 x}{x^2}\right)^2}\)…