Symbolic function is an extreme special case of hyperbolic tangent function: symbol (x) or symbol (x) is called symbolic function, and its function is to take a certain number of symbols (positive or negative) in mathematics and computer operations: when x >; 0，sign(x)= 1； When x=0, sign (x) = 0; When x

Sign is also called sgn, which means symbol. Symbolic function (generally represented by symbol (X)) is a very useful function, which can help us realize some constructions that are difficult to realize directly in the geometric sketchpad.

Symbolic functions can separate symbols of functions. In mathematics and computer operation, its function is to take a certain number of symbols (positive or negative): when x >；; 0，sign(x)= 1； When x=0, sign (x) = 0; When x

Symbol (x) or symbol (x) is called symbolic function. In mathematics and computer operations, its function is to take a certain number of symbols (positive or negative):

When x>0, sign (x) =1; When x=0, sign (x) = 0; When x

Ssign means "symbol, sign, gesture", and the second means "symbol, sign, sign", which can also be used as a plus sign or a minus sign in mathematics. As a verb, sign means "sign, write" and "gesture".