(X + 1) 5arctan(x ) ^ 1 5x s + 40 .x 3 + 3 3jc 1 6 48* 4 + 144x 4 + 144? + 48 同时, DERIVE有较强的表达式化简能力 , 因此它能判断不同形式的表达式等价 性. 这就为辅助教学提供了基本的运算与判别的基础 . 2 .DERIVE有灵活多变的作图技术 . 辅助教学的 一个基...
Sur de nouvelles phases oxyfluorees derivees du niobate de plomb: Etudes cristallographique et dielectriqueThe solid solution Pb 2xNa xNb 2O 7xF x obtained by substitution of oxygen by fluorine in the ferroelectric oxide Pb 2Nb 2O 7 has the cubic pyrochlore structure for 0, 75 x 1, 85 ...
Ahn, X. Xu, A. Wieland, K. Araki, E.E. West, H.E. Ghoneim, Y. Fan, et al. Effector CD8 T cells dedifferentiate into long-lived memory cells Nature, 552 (2017), pp. 404-409 CrossrefView in ScopusGoogle Scholar Zhang et al., 2008 Y. Zhang, T. Liu, C.A. Meyer, J. ...
,;FFTrerhpep)e);; bTTlhuhee bdblaluusehe dldianaseshhislliqinnueeaniisstiqfiqueudaannbttyiiffiuieesddinbgbyyCuDussi=inn1ggiCnCDEDq==u1a1tiiinonnEE(q1qu)uafaottirioornnef(e(11r)e)nffocorer r(reie.fefe.er,reFenrnecpce'e)(.(iiT.e.eh.,.e,FFsrerhpep'o')).w.TTnhhteessshthoco...
Dérivée de exp(u(x)) f′(x) ∀x∈R,f′(x)=u′(x)⋅exp(u(x)) Démonstration On considère la fonctiong(x)=exp(x)et la fonctionh(x)=u(x). Alors,f(x)=g(h(x)). En utilisant la règle dedérivation de la composition de fonction, on a : ...
Temporal metrics do not explicitly capture the timing but rather the amplitude of the reflectance variation and so are insensitive to phenological differences (DeFries et al., 1995, Friedl et al., 2010) where time series may exhibit different phenological variation at different locations for the ...