You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser.
-
Thanks, just downloaded the app, it is great!
-
I am a thirteen year old passionate to learn calculus(and possibly programming) but i do not know how to start. Please help.
-
Hi, i am studying because i think it is fun! I might ask some astronomy and mathematics questions, but mostly physics!