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Mathematics 13 Online
OpenStudy (anonymous):

Help please

OpenStudy (anonymous):

\[3^{6n}\le1/81\]

OpenStudy (anonymous):

1/81 is the same as 3 to the 4th power

OpenStudy (anonymous):

3^4=81

OpenStudy (anonymous):

Yes I already put that

OpenStudy (anonymous):

so the equation is not true 81<=(1/81)

OpenStudy (anonymous):

I'm trying to solve the equation. .... not see if it's true.

OpenStudy (anonymous):

what is unknown in the equation

OpenStudy (ybarrap):

Is that 3^(6n) <= 1/81 ?

OpenStudy (anonymous):

Less than or equal, but yeah that is what I put ^^

OpenStudy (mathstudent55):

\(3^{6n}\le \dfrac{1}{81} \) \( 3^{6n}\le 3^{-4} \)

OpenStudy (anonymous):

6n < -4

OpenStudy (anonymous):

Okay, I got it, thanks.

OpenStudy (ybarrap):

\[3^{6n}\le1/81\] \[6nln(3)\le \ln(1/81)\] \[6n \le \frac{ \ln(1/81) }{ \ln(3) }\] \[n \le ?\]

OpenStudy (ybarrap):

Do you see the process ?

OpenStudy (ybarrap):

looks like you got it the easier way, nice.

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