$\int \cos (\log x) d x=F(x)+C,$ જ્યાં $C$ એ એક સ્વૈચ્છિક અચળાંક છે. અહીં, $F(x)$ કોના બરાબર છે?

  • A
    $x[\cos (\log x)+\sin (\log x)]$
  • B
    $x[\cos (\log x)-\sin (\log x)]$
  • C
    $\frac{x}{2}[\cos (\log x)+\sin (\log x)]$
  • D
    $\frac{x}{2}[\cos (\log x)-\sin (\log x)]$

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