Click on the function, and type a then b if there is a b. Feel free to use these math functions if you need them. (: ᵇ√a is not perfect though, because I am using Newton's method to find the b-th root, so it's not perfectly precise, and gets slow with large numbers. I made this because I got bored, and wanted to make math stuff. If you want any formula added, tell me in the comments (:
