InterviewSolution
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Which of the following option(s) is/are incorrect? |
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Answer» `int_(0)^(pi//8)|(SIN(8nx)+cos(8nx))/x| dx lt(2sqrt(2))/(pi)(1+1/2+1/3+………+1/n)` `A_(n)gt 1/(pi) [int_(0)^(pi)"sinnt+cost|dt+int_(pi)^(2pi)(|sinnt+cost|dt)/2+..]` `gt1/(pi)(1+1/2+1/3+…..+1/n)(int_(0)^(pi)|sint+cost|dt)` `gt(2sqrt(2))/(pi)(1+1/2+1/3+….31/n)` (C) `(3sqrt(sinx)+8-3sqrt(sinx))/2gesqrt(3sqrt(sinx)(8-3sqrt(sinx)))` (D) `1le tan x le sqrt(3)` and `3/(pi) le 1/x le 4/(pi)` So, `3/(pi)le (tanx)/x le (4sqrt(3))/(pi)` |
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