Question

How do I do this ↓↓↓ on a Ti-83

Answer 1

Thank you in advance!

Answer 2

TI-83's don't come equipped with logarithms in bases other than 10 and \(e\), but you can still use these to express logarithms in other bases.

Recall the change of base formula:
\[\large \log_b a=\frac{\ln a}{\ln b}=\frac{\log_{10} a}{\log_{10} b}\]

Answer 3

Alternatively, since \(343=7^3\), you can simply use other properties of logs:
\[\log_7 343=\log_7 7^3=3\log_7 7=3\]

Answer 4

Even the Ti-83 plus? and thank you i didn't even think about changing it.

Answer 5

I think anything before the 84 (maybe even 89, idk for sure) doesn't have a log button for an arbitrary base.