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posted by Angela on Sunday, July 24, 2011 at 9:39pm.
given that f(x)=11^x, find x when f(x)=7 a) x=Ln(7/11) b) x=Ln7/Ln11 c) x= 7/11 d) x= ll sub 7 11
so you solving: 11^x = 7 take ln of both sides ln(11^x) = ln7 x(ln11) = ln7 x = ln7/ln11
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