Tus txheeb ze yam tsawg kawg nkaus thiab qhov siab tshaj plaws yog dab tsi?

Video: Tus txheeb ze yam tsawg kawg nkaus thiab qhov siab tshaj plaws yog dab tsi?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

A txheeb ze tshaj plaws taw tes yog qhov taw tes uas qhov ua haujlwm hloov pauv kev coj ua los ntawm kev nce mus rau qis (ua rau qhov taw tes ntawd yog "peak" hauv daim duab). Ib yam li ntawd, a yam tsawg kawg nkaus taw tes yog ib qho taw tes uas qhov kev ua haujlwm hloov pauv ntawm kev txo qis mus rau nce (ua qhov taw tes ntawd "hauv qab" hauv daim duab).

Tsis tas li ntawd, tus txheeb ze tshaj plaws yog dab tsi?

A txheeb ze tshaj plaws yog lub ntsiab lus uas siab tshaj cov ntsiab lus ncaj qha ntawm ib sab ntawm ob sab, thiab a kwv tij yam tsawg kawg yog ib qho taw tes uas qis dua cov ntsiab lus ncaj qha ntawm nws ob sab.

Tsis tas li ntawd, tus txheeb ze yam tsawg kawg tuaj yeem yog qhov tsawg kawg nkaus? A kwv tij siab tshaj los yog yam tsawg kawg nkaus tshwm sim atturning cov ntsiab lus ntawm qhov nkhaus qhov twg raws li qhov yam tsawg kawg nkaus thiab qhov siab tshaj plaws yog qhov tsim nyog qhov tseem ceeb tshaj tag nrho cov npe ntawm cov haujlwm. Hauv lwm lo lus cov yam tsawg kawg nkaus thiab qhov siab tshaj plaws yog bounded los ntawm lub luag haujlwm ntawm lub luag haujlwm. Yog li peb muaj: kwv tij yam tsawg kawg nkaus x = 1,3 x − 9.

Kuj paub, koj yuav nrhiav qhov tsawg kawg nkaus thiab qhov siab tshaj plaws li cas?

Peb tuaj yeem txheeb xyuas qhov yam tsawg kawg nkaus los yog tus nqi siab tshaj ntawm parabola los ntawm kev txheeb xyuas qhov y-coordinate ntawm thevertex. Koj tuaj yeem siv daim duab los txheeb xyuas qhov vertex lossis koj tuaj yeem ua tau nrhiav tus yam tsawg kawg nkaus los yog tus nqi siab tshaj algebraically siv cov qauv x = -b/2a. Qhov no qauv yuav muab rau koj x-coordinate ntawm thevertex.

Tus txheeb ze yam tsawg kawg yog dab tsi?

Yam tsawg kawg nkaus , kwv tij Min Qhov qis tshaj plaws nyob rau hauv ib ntu ntawm ib daim duab. Note: Thawj qhov kev xeem derivative thiab qhov thib ob derivative test yog cov qauv siv los nrhiav yam tsawg kawg nkaus qhov tseem ceeb ntawm kev ua haujlwm.

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