Use bnf notation to define the set of decimal numbers, which consist of an optional sign (+ or following by one or more digits, followed by a decimal point, followed by zero or more digits.

The place where the extended axis of the earth would touch the celestial sphere is called the celestial

Write a fragment of code that reads in strings from standard input, until end-of-file and prints to standard output the largest value. you may assume there is at least one value. (cascading/streaming logic, basic string processing)

Verify each identity[tex] \frac{csc}{cot \: x \: + \: tan \: x} = cos \: x[/tex]