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## xavier11 multiplicative inverse of $1\div3+i$ 2 years ago 2 years ago

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1. satellite73

i could have sworn we just did this

2. xavier11

nope!

3. satellite73

$\frac{1}{3+i}$?

4. satellite73

multiplicative inverse is $3+i$ because if you multiply them together you get 1

5. xavier11

nope!

6. xavier11

nope!

7. xavier11

so the answer is 3+i?

8. satellite73

it is true that $\frac{1}{3+i}\times (3+i)=1$

9. satellite73

complex numbers are weird, but not that weird

10. satellite73

hello joe hello fred

11. joemath314159

i believe you satellite!

12. Owlfred

xavier11, it's best when you put work in your questions so you understand how to derive the answer.

13. xavier11

nope!

14. xavier11

yes i completely agree, im just a little pressed for time right now