Let fk(= \(\frac{1}{k}\) [sink x + cos2 x] where x ∈ R and k ≥ 1. Then f4(– f6(= …………………
A. \(\frac{1}{4}\)
B. \(\frac{1}{12}\)
C. \(\frac{1}{6}\)
D. \(\frac{1}{3}\)
Answer:B
Let fk(= \(\frac{1}{k}\) [sink x + cos2 x] where x ∈ R and k ≥ 1. Then f4(– f6(= …………………
A. \(\frac{1}{4}\) B. \(\frac{1}{12}\) C. \(\frac{1}{6}\) D. \(\frac{1}{3}\)