如何理解｜dz｜? - 知乎 复变函数的积分定义为如下形式的极限 ∫ γ f (x) d z = lim λ → 0 ∑ k = 1 n f (ζ k) (z k z k 1) (符号的含义就不啰嗦了, 学过分析的都懂 ) 那么带绝对值的形式无非就是 ∫ γ | f (x) | | d z | = lim λ → 0 ∑ k = 1 n | f (ζ k) | | z k z k 1 | 当 f (z) ≡ 1 时, 我们有 ∫ γ | d z | = lim λ → 0 ∑ k = 1 n | z k z k 1 | 这就是曲线
dz and z Is there really big difference? [duplicate] Yes, dz and z sound very different to native speakers, and when pronounced properly are clearly distinguishable It is actually far more common for dz and ts to be confused by non-native speakers, but even these are distinct