Solved papers for JEE Main & Advanced JEE Main Solved Paper-2014

done JEE Main Solved Paper-2014 Total Questions - 1

• question_answer1) Let \[{{f}_{k}}(x)=\frac{1}{k}(si{{n}^{k}}x+co{{s}^{k}}x),\]where\[x\in R\]and\[k\ge 1.\]Then\[{{f}_{4}}(x)-{{f}_{6}}(x)\]equals:   JEE Main  Solved  Paper-2014
  A)
  \[\frac{1}{6}\]                                   
  done clear
  B)
  \[\frac{1}{3}\]
  done clear
  C)
  \[\frac{1}{4}\]                                   
  done clear
  D)
  \[\frac{1}{12}\]
  done clear
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