R&b hu nkauj dab tsi?

Cov txheej txheem:

R&b hu nkauj dab tsi?
R&b hu nkauj dab tsi?
Anonim

R yog ib hom lus programming thiab ib puag ncig software dawb rau kev suav lej thiab cov duab uas txhawb nqa los ntawm R Core Team thiab R Foundation rau Kev Tshawb Fawb Txog Kev Tshawb Fawb. Nws yog siv dav hauv cov neeg txheeb cais thiab cov ntaub ntawv miners los tsim cov software txheeb cais thiab cov ntaub ntawv txheeb xyuas.

R siv dab tsi rau hauv kev txheeb cais?

R yog hom lus programming rau kev suav txheeb thiab cov duab uas koj tuaj yeem siv los ntxuav, tshuaj xyuas, thiab teeb tsa koj cov ntaub ntawv. Nws yog dav siv los ntawm cov kws tshawb fawb los ntawm ntau yam kev qhuab qhia los kwv yees thiab nthuav tawm cov txiaj ntsig thiab los ntawm cov kws qhia ntawv ntawm kev txheeb cais thiab kev tshawb fawb.

R txawv ntawm Python li cas?

Qhov txawv tseem ceeb yog tias Python yog hom lus siv dav dav, thaum R muaj nws cov hauv paus hauv kev txheeb xyuas. Ntau ntxiv, cov lus nug tsis yog yuav xaiv qhov twg, tab sis yuav ua li cas thiaj siv tau zoo tshaj plaws ntawm ob hom lus programming rau koj qhov kev siv tshwj xeeb.

R ua dab tsi?

R tuaj yeem siv los ua ntau yam haujlwm - khaws cov ntaub ntawv, tshuaj xyuas cov ntaub ntawv, thiab tsim cov qauv ntsuas. Txij li thaum kev txheeb xyuas cov ntaub ntawv thiab cov ntaub ntawv tsuas yog cov txheej txheem uas yuav tsum tau muaj ntau yam kev siv thiab kev sib txuas lus, R yog ib hom lus zoo tshaj plaws los kawm.

Vim li cas R thiaj hu ua R?

R yog tsim los ntawm Ross Ihaka thiab Robert Gentleman ntawm University of Auckland, New Zealand, thiab tam sim no yog tsim los ntawm R Development Core Team, uas Chambers yog ib tug tswv cuab. R yog npe ib nrab tom qab thawj lub npentawm thawj ob tus kws sau R thiab ib nrab ua si ntawm lub npe S.

Pom zoo:

Nthuav cov khoom
Koj puas tuaj yeem mus ntsib dagestan?
Nyeem ntxiv

Koj puas tuaj yeem mus ntsib dagestan?

Dagestan, officially lub koom pheej ntawm Dagestan yog ib lub koom pheej ntawm Russia nyob rau hauv lub Caspian Hiav txwv, nyob rau hauv lub North Caucasus ntawm Eastern Europe. Nws nyob rau sab qaum teb ntawm Greater Caucasus, thiab yog ib feem ntawm North Caucasian Federal District.

Xab npum suds siv rau dab tsi?
Nyeem ntxiv

Xab npum suds siv rau dab tsi?

A xab npum suds enema yog ib txoj hauv kev kho cem quav. Qee tus neeg kuj siv nws los kho fecal incontinence lossis tshem lawv cov quav ua ntej kev kho mob. Thaum muaj ntau hom enemas, xab npum suds enema tseem yog ib qho ntawm ntau hom, tshwj xeeb tshaj yog rau cem quav.

Puas yog qhov kev xeem thib ob?
Nyeem ntxiv

Puas yog qhov kev xeem thib ob?

Qhov thib ob derivative yuav yog siv los txiav txim siab hauv zos extrema ntawm kev ua haujlwm raws li qee yam xwm txheej. Yog tias qhov kev ua haujlwm muaj qhov tseem ceeb rau qhov twg f′(x)=0 thiab qhov thib ob derivative yog qhov zoo ntawm qhov no, ces f muaj qhov tsawg kawg nkaus hauv zos ntawm no.