问数学式中函数与自变量符号间一定要留空隙吗?答需要对具体问题进行具体分析。依据GB3102.11—1993,函数的自变量写在函数符号后的圆括号中,且函数符号与圆括号之间不留空隙,如f(x)、tan(ωt+φ)。如果函数的符号由2个或更多的字母组成且 Is there any gap between the function and the sign of the argument in the mathematical formula? A specific analysis of the problem is needed. According to GB3102.11-1993, the arguments to the function are written in parentheses after the function symbol, leaving no gaps between function symbols and parentheses, such as f (x), tan (ωt + φ). If the function’s symbol consists of 2 or more letters and