How do I get negative exponent?

Question

I am trying to get negative exponent expression to work. Say I have 1.3 * 10^-3

I tried putting that between \$$ pair and got the following

$$1.3 * 10^-3$$

I see 10-3 instead of seeing -3 in superscript

Thanks

Answer 1

To get more than two "symbols" in the exponent, you need the brackets {...}.

Then you get $10^{-3}$ by 10^{-3}

Keep in mind, that you always need these brackets, when you want to put more symbols in the exponent, or index.

For example $x_{12}$ by x_{12}