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Similar to ใบงานที่ 4 (8)
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ใบงานที่ 4
- 1. ใบงานที่ 4
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1.
จงหาโดเมนและเรนจ์ของความสัมพันธ์ต่อไปนี้
1) r
(x, y) y
x
2
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2) r
(x, y) y
x2
1
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3) r
(x, y) y
9
x2
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- 2. 2
4) r
5x 2
(x, y) y
9
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2. จงหาโดเมนและเรนจ์ของความสัมพันธ์ต่อไปนี้ โดยพิจารณาจากกราฟของความสัมพันธ์
1) r
(x, y) y
x
2
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2) r
(x, y) y
x2
1
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