Video: Puas yog qhov tsis zoo thiab qhov zoo nqes hav tuaj yeem sib npaug?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Theorem 104: Yog tias ob kab muaj tib yam txoj kab nqes , ces cov kab yog nonverttical thaum uas tig mus kab. Yog hais tias ob kab yog perpendicular thiab tsis yog ib tug ntsug, ces ib tug ntawm cov kab muaj a zoo nqes hav , thiab lwm yam muaj a nqes hav tsis zoo . Tsis tas li ntawd, qhov tseem ceeb ntawm lawv qhov chaw siab tshaj yog reciprocals.
Ntxiv mus, ob kab uas tsis zoo nqes hav tuaj yeem ua ke?
Nco ntsoov tias ob kab yog thaum uas tig mus yog lawv qhov chaw siab tshaj sib npaug thiab lawv muaj qhov sib txawv y-intercepts. Hauv lwm lo lus, perpendicular qhov chaw siab tshaj yog tsis zoo kev sib raug zoo ntawm ib leeg. Nov yog kev tshuaj xyuas sai ntawm cov txoj kab nqes /intercept form of a kab.
Ib yam li ntawd, cov kab sib txuas puas muaj tib txoj kab nqes? Parallel kab muaj tib txoj kab nqes thiab yuav tsis sib tshuam. Parallel kab txuas ntxiv, lus, mus ib txhis tsis kov (xav tias cov no kab yog on ib yam dav hlau). Ntawm qhov tod tes, lub txoj kab nqes ntawm perpendicular kab yog cov tsis zoo reciprocals ntawm ib leeg, thiab ib khub ntawm no kab sib tshuam ntawm 90 degrees.
Kuj paub, cov kab sib txuas puas tuaj yeem tsis zoo?
Parallel kab muaj tib txoj kab nqes. Qhov siab ntawm perpendicular kab yuav ua tus opposite reciprocal ntawm ib leeg. Rov qab ntawm no txhais tau hais tias tus opposite kos npe. Yog hais tias txoj kab nqes yog qhov zoo, ces nws qhov opposite yog tsis zoo.
Ua li cas koj thiaj paub tias txoj kab nqes yog perpendicular?
Perpendicular kab sib tshuam ntawm txoj cai kaum rau ib leeg. Rau xav tias ob qhov sib npaug yog perpendicular , saib lawv qhov chaw siab tshaj . Cov qhov chaw siab tshaj ntawm perpendicular kab yog opposite reciprocals ntawm ib leeg. Lawv cov khoom yog -1!
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Koj tuaj yeem qhia tau li cas yog tias ob qhov sib npaug sib npaug?
Peb tuaj yeem txiav txim siab los ntawm lawv qhov sib npaug seb puas yog ob kab sib npaug los ntawm kev sib piv lawv cov nqes hav. Yog hais tias cov slopes yog tib yam thiab cov y-intercepts txawv, cov kab yog parallel. Yog tias txoj kab nqes sib txawv, cov kab tsis sib npaug. Tsis zoo li cov kab sib luag, cov kab perpendicular sib tshuam
Puas yog txhua qhov sib npaug sib npaug sib npaug?
Thawj qhov sib npaug sib npaug yog qhov tseeb yog tias nws muaj kev txuag kom muaj nuj nqis. Piv txwv li, qhov sib npaug sib cais yeej ib txwm muaj tseeb, txij li lub ntsiab lus lawv yog ntawm daim ntawv: M(y) + N(t) = 0, yog li ϕ(t, y) = A(y) + B(t) yog a khaws cia kom muaj nuj nqis
Puas yog nws ua tau rau ib qho kev sib npaug ntawm ob txoj kab sib npaug kom tsis muaj kev daws teeb meem piav qhia koj qhov laj thawj?
Cov kab ke ntawm kab sib npaug tuaj yeem tsuas muaj 0, 1, lossis ib qho kev daws teeb meem tsis kawg. Ob kab no tsis tuaj yeem hla ob zaug. Cov lus teb raug yog tias qhov system muaj ib qho kev daws teeb meem. Total Number of Points Number of 2-Point Baskets Number of 3-Point Baskets 17 4 (8 ntsiab lus) 3 (9 points) 17 1 (2 points) 5 (15 points)
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no