How to make the first character of the word uppercase? - by Syom Do you know is there any function in PHP to make the first character of the word uppercase? Or must I write it by regular expression? Read the article
prove, that if sqr(a) + sqr(b) divisible on 7, then a + b divisible on 7 too [closed] - by Syom how can i prove, that if sqr(a) + sqr(b) divisible on 7, then a + b divisible on 7 too. i'm thinking on it whole day... Thanks Read the article