6.证明:-|||-a^2 ab b^2 1-|||-(1) 2a a+b 2b =(a-b)^3.-|||-1 1 1-|||-ax+by ay+bz az+
一、设f(z)=(1)/(2i)((z)/(overline(z))-(overline(z))/(z)),z≠0.试证:当z→0时,f(z)的极限不存在.一、
1.设 (AB)=P(overline (A)overline (B)), 且 (A)=p, 求P(B).
(1)(overline(AB)cup C)(overline(AC)); (2)(Acup B)(Acupoverline(B)).6.证明:(Acup B
设φ为可微函数, -az=varphi (y-bz), 求 dfrac (partial z)(partial x)+bdfrac (partial z)(pa
1.已知 P(A)=1/2 , P(B)=1/3 , (AB)=1/10, 则 (overline (A)cap overline (B))= __
设P(A)=(1)/(3),P(B)=(1)/(4),P(A∪B)=(1)/(2),求P(overline(A)∪overline(B)),P(overline
2.3 确定下列函数的解析区域和奇点,并求出导数:-|||-(1) dfrac (1)({z)^2-1} ;-|||-(2) dfrac (az+b)(cz+d
设(z)=1-overline (z), _(1)=2+3i _(2)=5-i, 则 ([ f({z)_(1)-(z)_(2))-|||-__等于设等于
6.设随机事件A、B互不相容, (A)=P, (B)=q, 则 (overline (A)B)= () 。-|||-