Dab tsi yog piecewise function piv txwv?
Dab tsi yog piecewise function piv txwv?

Video: Dab tsi yog piecewise function piv txwv?

Video: Dab tsi yog piecewise function piv txwv?
Video: What is our networked readiness? 2024, Kaum ib hlis
Anonim

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: