Video: Puas yog sin squared x sib npaug rau sin x squared?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog nws yog. kev txhaum ^2x yog ib yam sinx ^ 2 vim nyob rau hauv ob qhov xwm txheej "^ 2 "isrelating rau xwb x.
Tsuas yog li ntawd, yog kev txhaum squared tib yam li 2 kev txhaum?
Kev txhaum x^ 2 yog " sib ntawm (x- squared )”, yog li nws yog ib qho yooj yim sib muaj nuj nqi. Kev txhaum ^ 2 x yog" sib - squared ntawm x” uas yog qhov txawv ntawm qhov sib muaj nuj nqi. i.e. kev txhaum ^ 30 =( kev txhaum 30)^ 2 = 1/ 2 …… Nws yog kev sib txuas ntawm " sib ntawm x quant squared ”, yog li koj yuav daws tau kev txhaum x ua ntej thiab ces coj lub square.
Tsis tas li ntawd, yog kev txhaum (- X sib npaug rau sin x? Txij li - x yog tib lub kaum sab xis x reflectedacross tus x -axis, sin(-x ) =- kev txhaum ( x ) as sin(-x ) thim rov qab nws qhov zoo thiab qhov tsis zoo ib nrab thaum koj xav txog qhov sib koom ua ke ntawm cov ntsiab lus ntawm lub voj voog ntawm lub voj voog hauv daim ntawv p = (cos( x ), kev txhaum ( x )).
Kuj paub, puas yog sin 2 x tib yam li 2sinx?
Hauv lus Askiv dawb, 1 yog muab faib los ntawm whereas, 2 yog sine 2 muab faib ua x , los yog ob zaug lub kaum sab xis x . Yog li ob qhov sib txawv heev. Interestingly raws li sine yog aperiodic (repeating) waveform, cov duab no yuav intersectperiodically thiab ob kab lus yuav ntsuas rau lub ib yam tshwm sim!
sin2x txhais li cas?
sib 2x thiab sin(2 x ) yog tib yam, thawj zaug tsuas yog ib txoj kev tub nkeeg los sau nws xwb. Nkawd ob leeg txhais tau tias "multiply x by 2 and then take the sine of that" Ntawm qhov tod tes, 2sinx txhais tau tias " coj lub sine ntawm x ua ntej, ces muab nws los ntawm 2"
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
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
Nws puas yuav ua rau pom qhov sib npaug ntawm kab sib npaug mus rau ib kab thiab los ntawm ib qho taw tes ntawm kab?
Qhov sib npaug ntawm ib kab uas yog parallel lossis perpendicular rau ib kab? Cov lus teb tau: Cov nqes hav ntawm cov kab sib npaug sib npaug. Hloov txoj kab nqes paub thiab cov kev sib koom ua ke ntawm ib qho taw tes ntawm lwm txoj kab rau hauv daim ntawv point-slope kom pom qhov sib npaug ntawm kab sib npaug
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