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If `xgt0`, the least value of `n in N` such that `((1+i)/(1-i))^(n)=(2)/(pi)sin^(-1)((1+x^(2))/(2x))` is :A. 2B. 4C. 8D. 32 |
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Answer» Correct Answer - B `(1+x^(2))/(2) ge x" "(because A.M ge G.M.)` `therefore((e^(i(pi)/(4)))/e^(-i(pi)/(4)))^(n)=(2)/(pi).sin^(-1)(1)` |
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