Video: Koj ua pov thawj li cas ob kab yog coincident?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog ib kab yog sau li Ax + By = C, lawv-intercept yog sib npaug rau C/B. Yog txhua tus kab nyob rau hauv lub system muaj tib txoj kab nqes tab sis sib txawv y-intercept, lub kab yog sib npaug thiab tsis muaj kev daws teeb meem. Yog txhua tus kab nyob rau hauv lub system muaj tib txoj kab nqes thiab tib y-intercept, lub kab yog coincident.
Yog li ntawd, koj yuav ua li cas thiaj paub tias ob kab yog coincident?
Parallel Kab yog kab uas yeej tsis cuam tshuam. Ob nonverttical kab yog thaum uas tig mus yog thiab xwb yog lawv muaj tib txoj kab nqes. Ob kab uas pw saum ib leeg hu ua coincidentlines . Kab uas intersect nyob rau hauv ib tug point yog hu ua intersecting kab.
Ib yam li ntawd, muaj pes tsawg txoj kev daws teeb meem ntawm ob txoj kab sib npaug yog tias cov kab sib npaug? Txhua qhov qhia ob kab qe ua a qhov system ntawm kev sib npaug . Yog cov graphs kev sib npaug kev sib tshuam, ces muaj ib tug daws qhov ntawd muaj tseeb rau ob leeg kev sib npaug . Yog cov graphs equations ua tsis sib tshuam (piv txwv li, yog lawv parallel), ces tsis muaj kev daws teeb meem uas muaj tseeb rau ob leeg kev sib npaug.
Ib yam li ntawd ib tug yuav nug, nws txhais li cas thaum ob kab yog coincident?
Tsis sib xws . Ob kab los yog cov duab uas lieexactly rau saum ib leeg. Piv txwv li: cov no ob kab yog coincident , koj xwb ua tau 'tsis pom lawv ob leeg, vim lawv nyob saum ib leeg!
Txoj kab perpendicular yog dab tsi?
Hauv elementary geometry, cov cuab yeej ntawm kev ua perpendicular (perpendicularity) yog kev sib raug zoo ntawm ob kab uas sib ntsib ntawm lub kaum sab xis (90 degrees). A kab yog hais tias yog perpendicular rau lwm tus kab yog ob tug kab sib tshuam ntawm ib txoj cai.
Pom zoo:
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