Dab tsi yog qhov rov qab ntawm cubing tus lej?
Dab tsi yog qhov rov qab ntawm cubing tus lej?

Video: Dab tsi yog qhov rov qab ntawm cubing tus lej?

Video: Dab tsi yog qhov rov qab ntawm cubing tus lej?
Video: Koj Hais Dab Tsi?/Suabci Kwm & Ab Meej Ham/Official MV 2023 2024, Kaum ib hlis
Anonim

Siv x, lub voos xwmfab kom tau x3 thiab faib los ntawm 8 kom tau x3/8. Thisx 3/8 hu ua inverse muaj nuj nqi thiab sau ua f-1(x).

Kuj paub, dab tsi yog qhov ntxeev ntawm cubing tus lej?

Lub voos xwmfab hauv paus. Cov opposite ntawm cubing tus lej hu ua nrhiav tus kub hauv paus.

Tsis tas li ntawd, lub voos xwmfab ntawm 512 yog dab tsi? 512 nws yog ib tug zoo meej kub vim 8x 8x8 512 . Txij li thaum 512 yog tus lej tag nrho, nws yog ib qho zoo meej kub.

Hais txog qhov no, puas yog qhov hloov pauv ntawm lub cubic muaj nuj nqi kuj muaj nuj nqi?

Cov inverse ntawm lub cubic function yog a kub hauv paus. Cov thim rov qab ntawm ib tug linear muaj nuj nqi yog lwmlinear muaj nuj nqi . Yuav luag tag nrho cov linear muaj nuj nqi haveinverses uas yog muaj nuj nqi . Txawm li cas los xij, kab rov tav linear muaj nuj nqi muaj ib thim rov qab uas yog ib txoj kab ntsug uas yuav tsis dhau txoj kab ntsug.

Puas yog 49 square zoo meej?

Tus lej yog a zoo meej square (los yog a square number) yog nws square hauv paus yog ib tug integer; uas yog hais, itis cov khoom ntawm ib tug integer nrog nws tus kheej. Ntawm no, cov square hauv paus 49 yog 7. Yog li ntawd, tus square hauv paus 49 yog ib tug integer, thiab raws li ib tug tshwm sim 49 yog a zoo meej square.

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