A.負無限大至正無限大B.0~正無限大C.-360°~360°D.0~360°
A.赫茲(Hz)B.弧度(rad)C.弧度/秒D.度/秒
A.自變量連續(xù),函數(shù)值量化B.自變量連續(xù),函數(shù)值連續(xù)C.自變量離散,函數(shù)值量化D.自變量離散,函數(shù)值連續(xù)