Video: Yam ua piv txwv piv txwv li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib xaj khub yog a khub ntawm cov lej hauv ib qho tshwj xeeb xaj . Rau piv txwv , (1, 2) thiab (- 4, 12) yog xaj khub . Cov xaj ntawm ob tus lej tseem ceeb: (1, 2) tsis sib npaug rau (2, 1) -- (1, 2)≠(2, 1).
Yog li ntawd, qhov kev txiav txim ntawm ib khub xaj yog dab tsi?
Ib xaj khub yog ob tug lej uas tus xaj nyob rau hauv uas lawv muab yog ib qho tseem ceeb. Order khub feem ntau yog hais txog ib txheej ntawm ob tus lej siv los nrhiav qhov chaw hauv lub dav hlau sib koom tes. Thaum ib xaj khub hais txog qhov chaw ntawm qhov chaw nyob rau hauv lub dav hlau coordinate, lawv hu ua lub coordinates ntawm lub point.
Tsis tas li ntawd, qhov kev txiav txim khub sau ntawv yog dab tsi? Ib xaj khub yog ib tug muaj pes tsawg leeg ntawm x coordinate (abscissa) thiab y coordinate (ordinate), muaj ob qhov tseem ceeb sau nyob rau hauv ib tug taag txiav txim nyob rau hauv cov kab lus. Nws pab nrhiav qhov taw tes ntawm Cartesian dav hlau kom pom kev nkag siab zoo dua. Tus lej muaj nuj nqis hauv ib xaj khub tuaj yeem yog tus lej lossis feem.
Piv txwv li, dab tsi yog ib khub xaj hauv lej?
Hauv lej , ib xaj khub (a, b) yog a khub ntawm cov khoom. Cov xaj nyob rau hauv uas cov khoom tshwm nyob rau hauv lub khub yog qhov tseem ceeb: lub xaj khub (a, b) txawv ntawm qhov xaj khub (b, a) tsuas yog a = b. Cartesian cov khoom thiab binary kev sib raug zoo (thiab li no functions) yog txhais nyob rau hauv cov nqe lus ntawm xaj khub.
Tus khub txiav txim zoo li cas?
Ordered khub yog pawg ntawm cov lej siv rau plotting cov ntsiab lus. Lawv yog ib txwm sau rau hauv kab lus, thiab yog cais los ntawm ib tug comma. Ordered khub yog feem ntau pom ua ke nrog plaub-quadrant graph (tseem hu ua lub dav hlau ua haujlwm). Qhov no yog ib daim phiaj uas zoo li graph daim ntawv uas ob kab perpendicular hla.
Pom zoo:
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