what is the exponential format of log base 9 729 = x and what is its value?

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2007-11-23 07:34:20 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

9^(x) = 729
x ln 9 = ln 729
x = ln 729 / ln 9
x = 3

2007-11-23 08:05:08 · answer #1 · answered by Como 7 · 1⤊ 1⤋

9^x=729 --> x=3

2007-11-23 15:40:09 · answer #2 · answered by tinhnghichtlmt 3 · 0⤊ 1⤋

Try...

729 = 9*81 = 9^3

log_9 (729) = log_9 (9^3) = 3

2007-11-23 15:39:17 · answer #3 · answered by GusBsAs 6 · 1⤊ 1⤋

log base (b) of n = x <==> b ^ x = n

log base(9) 729 = x <==> 9 ^ x = 729

9 ^ x = 9 ^ 3

x = 3

2007-11-23 15:44:14 · answer #4 · answered by RVitberg 1 · 0⤊ 1⤋