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by **silentkillz1** on Sat May 30, 2009 10:36 pm

solve: (1/3)(power of x)=81

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by **stapel_eliz** on Sat May 30, 2009 11:14 pm

silentkillz1 wrote:solve: (1/3)(power of x)=81

To learn how to format math as typed text, try here. :wink:

I believe you mean the equation to be as follows:

. . . . . $\left(\frac{1}{3}\right)^x\, =\, 81$

If so, a good first step in solving this exponential equation might be to notice that 81 = 3⁴, and that 1/3 = 3^-1....

by **silentkillz1** on Sun May 31, 2009 1:49 am

thank you
that helped a lot

The Purplemath Forums

Need help with solving this equation: (1/3)(power of x)=81

Need help with solving this equation: (1/3)(power of x)=81

Re: Need help with solving this equation: (1/3)(power of x)=81