Video: Ln sib npaug li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub ntuj logarithm ntawm tus lej yog nws lub logarithm mus rau lub hauv paus ntawm kev ua lej tsis tu ncua e, qhov twg e yog tus lej tsis sib haum xeeb thiab cov lej sib txawv kwv yees li. sib npaug rau 2.718281828459. Lub ntuj logarithm ntawm e nws tus kheej, ln e 1,vim1 = e, thaum lub ntuj logarithm ntawm 1 yog 0, txij li e0 = 1.
Hais txog qhov no, puas yog LN thiab log10 tib yam?
Teb thiab piav qhia: Tsis yog, log 10 (x) tsis yog ib yam raws li ln (x), txawm hais tias ob qho no yog qhov tshwj xeeb logarithms uas tshwm sim ntau zaus hauv kev kawm txog lej ntau dua li ib qho
Ib tug kuj yuav nug, qhov txawv ntawm cav thiab ln yog dab tsi? Feem ntau log (x) txhais tau tias lub hauv paus 10 logarithm; nws muaj peev xwm, kuj sau raws li log 10(x). ln (x) txhais tau tias lub hauv paus e logarithm; nws muaj peev xwm, kuj sau raws li log e(x). ln (x) hais rau koj dab tsi hwj chim koj yuav tsum tsa e kom tau tus lej x.
Hauv qhov no, Ln muab faib li cas?
Lub ntuj log, los yog ln , yog inverse e. Plaub lub ntsiab ln cov cai yog: ln (x)(y) = ln (x) + ln (y) ln (x/y) = ln (x) - ln (y) ln (1/x) = − ln (x)
Yuav ua li cas hloov LN rau tus lej?
Rau hloov a tus lej los ntawm lub ntuj mus rau ib qho kev sib cav, siv qhov sib npaug, ln (x) = log(x) ÷ log(2.71828).
Pom zoo:
Yuav daws qhov tsis sib npaug ntawm cov kab sib npaug thiab cov kab sib npaug sib npaug li cas?
Kev daws qhov tsis sib npaug ntawm qhov sib npaug yog zoo ib yam li kev daws cov kab sib npaug. Qhov sib txawv tseem ceeb yog koj tig lub cim tsis sib xws thaum faib lossis muab faib los ntawm tus lej tsis zoo. Graphing linear inequalities muaj ob peb qhov sib txawv ntxiv. Qhov uas yog qhov ntxoov ntxoo muaj xws li qhov tseem ceeb uas qhov kev tsis sib xws ntawm cov kab tawm muaj tseeb
Koj tuaj yeem qhia tau li cas yog tias ob qhov sib npaug sib npaug?
Peb tuaj yeem txiav txim siab los ntawm lawv qhov sib npaug seb puas yog ob kab sib npaug los ntawm kev sib piv lawv cov nqes hav. Yog hais tias cov slopes yog tib yam thiab cov y-intercepts txawv, cov kab yog parallel. Yog tias txoj kab nqes sib txawv, cov kab tsis sib npaug. Tsis zoo li cov kab sib luag, cov kab perpendicular sib tshuam
Puas yog txhua qhov sib npaug sib npaug sib npaug?
Thawj qhov sib npaug sib npaug yog qhov tseeb yog tias nws muaj kev txuag kom muaj nuj nqis. Piv txwv li, qhov sib npaug sib cais yeej ib txwm muaj tseeb, txij li lub ntsiab lus lawv yog ntawm daim ntawv: M(y) + N(t) = 0, yog li ϕ(t, y) = A(y) + B(t) yog a khaws cia kom muaj nuj nqis
Cov coefficients hauv kev sib npaug tshuaj sib npaug qhia koj li cas txog cov reactants thiab cov khoom?
Cov coefficients ntawm kev sib npaug chemicalequation qhia peb cov txheeb ze ntawm moles ntawm reactants thiab cov khoom. Hauv kev daws teeb meem stoichiometric, kev hloov pauv ntawm moles ntawm reactants rau moles ntawm cov khoom raug siv. Hauv kev suav loj, cov molar loj yog xav tau los hloov cov huab hwm coj mus rau moles
Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no