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Yuav ua li cas koj pom cov polar coordinates ntawm ib qho point?
Yuav ua li cas koj pom cov polar coordinates ntawm ib qho point?

Video: Yuav ua li cas koj pom cov polar coordinates ntawm ib qho point?

Video: Yuav ua li cas koj pom cov polar coordinates ntawm ib qho point?
Video: Koj mus ua neej zoo li cas lawm 11/16/2018 2024, Kaum ib hlis
Anonim

Hloov los ntawm Cartesian Coordinates (x, y) rau Polar Coordinates (r, θ):

  1. r = √(x2 + y2)
  2. θ = tus-1 (y / x)

Xav txog qhov no, dab tsi yog qhov polar coordinates ntawm ib lub ntsiab lus?

Es tsis txhob siv cov kos npe nrug deb ntawm ob koom tes axes, polar coordinates qhia qhov chaw ntawm a taw tes P nyob rau hauv lub dav hlau los ntawm nws qhov kev ncua deb r los ntawm lub hauv paus chiv keeb thiab lub kaum sab xis θ ua nyob nruab nrab ntawm cov kab ntu los ntawm lub hauv paus chiv keeb mus rau P thiab qhov zoo x-axis.

Tsis tas li ntawd, polar coordinates siv rau dab tsi? Polar coordinates yog siv feem ntau nyob rau hauv navigation raws li lub hom phiaj los yog kev taw qhia ntawm kev mus ncig yuav muab raws li ib tug kaum sab xis thiab nyob deb ntawm cov khoom raug txiav txim siab. Piv txwv li, aircraft siv ib tug me ntsis hloov version ntawm lub polar coordinates rau navigation.

Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog lub hom phiaj ntawm polar coordinates?

Kev siv qhov kev ncua deb thiab kev taw qhia raws li kev piav qhia txoj hauj lwm yog li ntawd nyob deb ntau dua li siv ob qhov kev ncua deb ntawm daim phiaj. Qhov no txhais tau tias ntawm qhov chaw yog siv nyob rau hauv polar coordinates thiab bearings.

Qhov txawv ntawm Cartesian thiab polar coordinates yog dab tsi?

Txawm tias Cartesian coordinates tuaj yeem siv peb qhov ntev (x, y, thiab z), polar coordinates tsuas qhia ob qhov ntev (r thiab θ). Yog tias peb axis, z (qhov siab), ntxiv rau polar coordinates , cov koom tes system yog hu ua cylindrical ua haujlwm (r, θ, z).

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