Video: Dab tsi yog piecewise function piv txwv?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A piecewise muaj nuj nqi yog a muaj nuj nqi ua los ntawm cov khoom sib txawv muaj nuj nqi dhau qhov sib txawv. Rau piv txwv , peb tuaj yeem ua ib piecewise muaj nuj nqi f(x) qhov twg f(x) = -9 when -9 < x ≦ -5, f(x) = 6 when -5 < x ≦ -1, and f(x) = -7 when -1 <x ≦ 9.
Nyob rau hauv no, dab tsi yog ib tug piecewise muaj nuj nqi?
Hauv lej, a daim ntawv - txhais muaj nuj nqi (tseem hu ua a piecewise muaj nuj nqi los yog hybrid muaj nuj nqi ) yog a muaj nuj nqi txhais los ntawm ntau sub- muaj nuj nqi , txhua sub- muaj nuj nqi thov rau ib lub caij nyoog ntawm lub ntsiab muaj nuj nqi domain, sub-domain.
Ib yam li ntawd, puas yog ib qho kev ua haujlwm sib npaug? Hauv kev lej thiab kev txheeb cais, a piecewise linear , PL los yog segmented muaj nuj nqi yog tus muaj nqis tiag muaj nuj nqi txhais ntawm tus lej tiag lossis ib ntu ntawm qhov ntawd, nws daim duab yog tsim los ntawm cov kab ncaj nraim. Nws yog ib feem - txhais muaj nuj nqi , txhua yam ntawm nws daim yog affine muaj nuj nqi.
Tom qab ntawd, lo lus nug yog, dab tsi yog ib qho qauv?
A daim ntawv kev ua haujlwm yog ib txoj haujlwm uas tau hais los ntawm ib ntu ntawm ntu. Ib qho piv txwv yog tus nqi tiag, (1) Piecewise kev ua haujlwm tau ua tiav hauv Wolfram Language li Piecewise [val1, cond1, val2, cond2,].
Vim li cas cov haujlwm ua haujlwm tseem ceeb?
Piecewise muaj nuj nqi yog muaj nuj nqi uas muaj ntau qhov chaw. Txhua ntu yog txhais los ntawm ib qho chaw tshwj xeeb. Cov no muaj nuj nqi siv tau los xam cov nqi them thiab lwm yam teeb meem kev tshawb fawb thiab nyiaj txiag.
Pom zoo:
Yam ua piv txwv piv txwv li cas?
Ib khub xaj yog ib khub ntawm tus lej hauv ib qho kev txiav txim. Piv txwv li, (1, 2) thiab (- 4, 12) raug txiav ua khub. Qhov kev txiav txim ntawm ob tus lej tseem ceeb: (1, 2) tsis sib npaug rau (2, 1) -- (1, 2) ≠ (2, 1)
Dab tsi yog qhov sib piv thiab piv txwv?
Inverse proportion. Inverse proportions tshwm sim thaum ib tus nqi nce thiab qhov txo qis. Piv txwv li, ntau tus neeg ua haujlwm ntawm txoj haujlwm yuav txo lub sijhawm los ua kom tiav cov haujlwm. Lawv yog inversely proportional
Dab tsi yog txhais los ntawm lub sij hawm dissociation thiab dab tsi yog ib qho piv txwv ntawm cov khoom uas dissociates?
Dissociation, nyob rau hauv chemistry, sib cais ntawm ib yam khoom mus rau hauv atoms los yog ions. Thermal dissociation tshwm sim ntawm qhov kub thiab txias. Piv txwv li, hydrogen molecules (H 2) dissociate rau hauv atoms (H) ntawm kub heev; ntawm 5,000 ° K txog 95% ntawm cov molecules hauv cov qauv ntawm hydrogen yog dissociated rau hauv atoms
Dab tsi yog qhov txawv ntawm instantaneous thiab nruab nrab ceev dab tsi yog qhov piv txwv loj tshaj ntawm kev ceev ceev?
Qhov nruab nrab ceev yog qhov ceev nruab nrab ntawm lub sijhawm. Instantaneous ceev yuav yog qhov ceev txhua qhov muab tam sim ntawd hauv lub sijhawm ntawd, ntsuas nrog lub ntsuas ntsuas lub sijhawm
Dab tsi yog qhov txawv ntawm microevolution thiab macroevolution Dab tsi yog qee qhov piv txwv ntawm txhua tus?
Microevolution vs. Macroevolution. Piv txwv ntawm cov kev hloov microevolutionary no yuav suav nrog kev hloov ntawm hom xim lossis loj. Macroevolution, piv txwv li, yog siv los hais txog kev hloov pauv ntawm cov kab mob uas tseem ceeb txaus uas, dhau sijhawm, cov kab mob tshiab yuav raug suav tias yog hom tshiab nkaus xwb