static FunctionNode * Create(ExpressionNode *expression, char *text, char *sys)
A cotangent function in a syntax tree.
virtual Number * Cotangent()=0
Represents a mathematical function in a syntax tree.
virtual Number * Evaluate()=0
CotangentNode(ExpressionNode *expression, char *text, char *sys)
FunctionNode(ExpressionNode *expression, char *text, char *sys)
Base class for all nodes related to mathematical expressions.
ExpressionNode * expression