Video: Tus nqi loj tshaj ntawm sine yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov tus nqi siab tshaj ntawm kev ua haujlwm yog M = A + |B|. This tus nqi siab tshaj tshwm sim thaum twg los tau kev txhaum x = 1 or cos x = 1.
Hais txog qhov no, tus nqi siab tshaj ntawm sine theta yog dab tsi?
Cov Khoom Ntawm Cov Sine Daim duab Qhov siab tshaj ntawm kev txhaum θ yog 1 thaum θ = 90 ˚. Yam tsawg kawg nkaus tus nqi ntawm kev txhaum θ yog -1 thaumθ = 270 ˚. Yog li, qhov ntau ntawm qhov tseem ceeb ntawm kev txhaum θ yog -1 ≦ kev txhaum θ ≦ 1.
Ib sab saum toj no, koj yuav nrhiav tau tus nqi siab tshaj plaws li cas? Qhov thib ob txoj kev los txiav txim qhov tus nqi siab tshaj y = ax2 + bx + c. Yog tias koj qhov kev sib npaug nyob hauv daim ntawv ax2 + bx + c, koj tuaj yeem ua tau nrhiav tus siab kawg los ntawm kev siv qhov sib npaug: max = c - (b2/4a). Thawj kauj ruam yog los txiav txim seb koj qhov kev sib npaug muab a siab kawg yam tsawg kawg nkaus.
Kuj paub yog, dab tsi yog tus nqi siab tshaj ntawm y Sinx?
Cov tus nqi siab tshaj ntawm sinx yog 1. x = 90°, sinx = 1.
Qhov tsawg kawg nkaus tus nqi ntawm kev ua haujlwm yog dab tsi?
Cov yam tsawg kawg nkaus tus nqi ntawm a muaj nuj nqi yog cov qis tshaj point ntawm ib tug vertex. Yog tias koj qhov quadratic equation muaj apositive ib lo lus, nws kuj yuav muaj a yam tsawg kawg nkaus tus nqi . Koj nrhiav tau qhov no yam tsawg kawg nkaus tus nqi los ntawm graphing muaj nuj nqi orby siv ib qho ntawm ob qhov sib npaug.
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