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Jessiewea Jessiewea
  • 25-03-2014
  • Mathematics
Answered

logb121=2   
Can somebody help and explain?

Verified Answer :

madankapoor10
madankapoor10 madankapoor10
  • 25-03-2014

\(log_b 121=2 \\ log_b 11^2=2 \\ 2log_b11=2 \\ log_b11=1\)
therefore b=11

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Anonymous Anonymous
  • 28-03-2014

\(log_b121=2\iff b^2=121\to b=\sqrt{121}\to b=11\\\\b > 0\ \wedge\ b eq1\\\\\\\log_ab=c\iff a^c=b\)

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