TS EAMCET · Maths · Functions
The period of \(\cos \left(x+8 x+27 x+\ldots+n^3 x\right)\) is
- A \(\frac{2 \pi}{n}\)
- B \(\frac{2 \pi}{n^2(n+1)^2}\)
- C \(\frac{8 \pi}{n^2(n+1)^2}\)
- D \(\frac{8 \pi}{n^3(n+1)^2}\)
Answer & Solution
Correct Answer
(C) \(\frac{8 \pi}{n^2(n+1)^2}\)
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