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ใบงานที่ 3
The document contains 7 relations and asks the student to find the domain and range of each relation. It provides a series of ordered pairs for the first relation and formulas defining the relationships between x and y for the remaining relations. The student is expected to analyze each relation and determine the set of valid inputs (domain) and outputs (range) for each one.
ใบงานที่ 3
- 1. ใบงานที่ 3 ชื่อ.....................................................................................ชั้น.....................เลขที่........... จงหาโดเมนและเรนจ์ของความสัมพันธ์ต่อไปนี้ 1) r (1,2),(2, 3),(3, 4),(4, 5) ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... 2) r (1, 4),(3, 6),(5, 8),(7, 9) ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... 3) r (x, y) A B y x 1 เมื่อ A 1, 2, 3 และ B 2, 3, 4 ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... 4) r (x, y) y 3x 2 ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... .....................................................................................................................................
- 2. 2 5) r (x,y) xy x 3y 1 0 ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... 6) r (x, y) y x x 2 1 ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... 7) r (x, y) y 2x 3x 3 5 ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... ..................................................................................................................................... .....................................................................................................................................