General Description de range of applica is local on card bypassing is needed only if the regulator is located far from 9 gulation, eliminating the distribution problems associated the filter capacitor of the power supply rith single point regulation. The voltages available allow For output voltage other
多元函数 定义 11.2.1 设 D 是 n R 上的点集,D 到 R 的映射 f : D → R , x 6 z 称为 n 元函数,记为 z f = ( ) x 。这时,D 称为 f 的定义域, f ( ) D = { R | ( ), } z zf ∈ = ∈ xx D 称为 f 的值域,Γ= 1 {(,) R | ( ), } n z zf + x x ∈= ∈x D 称为 f 的图像