Tus menyuam kawm ntawv nyob qhov twg ntawm daim ntawv xaj?

Cov txheej txheem:

Tus menyuam kawm ntawv nyob qhov twg ntawm daim ntawv xaj?
Tus menyuam kawm ntawv nyob qhov twg ntawm daim ntawv xaj?
Anonim

feem ntau koj tsis tuaj yeem pom koj tus lej PD sau rau ntawm koj lub tsom iav. Cov lej nyob rau sab hauv ntawm lub tuam tsev txhais caj npab ntawm qee lub thav duab qhia qhov ntsuas rau tus ncej nws tus kheej. Koj tus lej PD yuav tsum tau sau ntawm koj daim iav tsom iav hauv ntu PD.

Puas yog qhov kev ncua deb ntawm koj cov tshuaj?

Nws yog ntsuas hauv millimeters thiab qhia tus kws tsim lub lens qhov twg tso qhov chaw kho qhov muag ntawm txhua lub lens. Koj tuaj yeem nug koj tus kws kho qhov muag kom suav koj qhov kev ntsuas PD ntawm koj daim ntawv xaj, lossis yog tias koj tsis muaj nws, ntawm no yog qhov koj tuaj yeem ntsuas koj tus kheej.

Vim li cas qhov kev ncua deb ntawm cov menyuam yaus tsis nyob ntawm kuv cov tshuaj?

Qee lub chaw ua haujlwm yuav muab PD ntsuas los ntawm qee qhov ntsuas thaum koj kuaj xyuas cov tshuaj thiab lwm tus yuav muaj tus kws kho qhov muag ntsuas qhov ntsuas rau koj. Tus kws kho mob thaum koj kuaj xyuas tsis coj koj tus PD txhua lub sijhawm thaum koj kuaj, vim tias tshuav rau tus kws kho qhov muag uas yuav ua rau koj lub qhov muag.

Dab tsi ntawm qhov muag tshuaj yog nyob deb?

Feem ntau, qhov txuas ntxiv deb ntawm xoom tus lej ntawm koj daim ntawv xaj, qhov tsis zoo ntawm koj qhov muag thiab qhov kho qhov muag ntau dua (cov tshuaj muaj zog dua) koj xav tau. Ib qho "ntxiv" (+) kos npe rau pem hauv ntej ntawm tus lej txhais tau hais tias koj pom qhov deb, thiab "muab" (-) kos npe txhais tau tias koj pom ze.

Yuav ua li cas yog tias PD ua tsis ncaj ncees rau tsom iav?

PD txhais tau tias "qhov deb ntawm cov menyuam yaus," uas yognrug ntawm qhov nruab nrab ntawm txhua tus menyuam kawm ntawv. Qhov ntsuas no yog siv los txiav txim qhov chaw koj saib los ntawm lub lens ntawm koj lub tsom iav. Yog tias PD yuam kev, lossis raws li peb hais hauv lub ntiaj teb kho qhov muag "tawm ntawm kev ua siab ntev," koj yuav tsis tuaj yeem tsom koj ob lub qhov muag ua ke kom raug.

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.