Math Is Fun Forum

Hi,
I found this site in my history and decided to check back on it
and I tried making an account but the email was in use!
And I remembered asking a question like a year ago.

Well, I'll be here trying to improve my math skills :3

Hi guys,

I got a problem at school and I have an answer but I'm not so confident about it :\
Anyways, any help is appreciated and I'ld be very thankful

Problem:
The digits from 1 to 9 are used once each to make two numbers like 12345 and 6789 for example.
Write the numbers that when multiplied together will give you the largest possible answer.

Thanks again!
My answer was 97531 and 8642
It could be right but I don't know
Explanations and reasons would be helpful to

Thanks again

Hey guys,
is there a formula to figuring out tangents of let say f(x) if only a point of the tangent (a, b), (not on f(x)) is given?

Thanks a bunch guys