1.问下列各函数有哪些孤立奇点?各属于哪一类型?如果是极点,指出它的阶数.-|||-(1) dfrac (1)({z)^3(({z)^2+1)}^2}-|||-(2) dfrac ({e)^2sin 2}({2)^2};-|||-(3) dfrac (1)({2)^3-(z)^2-z+1}-|||-(4) dfrac (1)(sin 2)-|||-(5) dfrac (z)((1+{z)^2)(1+(e)^z)}-|||-(6) sin dfrac (1)(1-z);-|||-(7) ^2-dfrac (1)(z);-|||-(8) sin dfrac (1)(z)+dfrac (1)({z)^2};-|||-overline (1-i)-|||-(10) dfrac ({z)^2n}(1+{z)^n};-|||-(11) dfrac (ln (z+1))(z);-|||-(12) dfrac ({e)^dfrac (1{1)-i}}({e)^2-1}

1.下列函数有些什么奇点?如果是极点,指出它的级数:-|||-(1) dfrac (1)(z{({z)^2+1)}^2} ;-|||-(2) dfrac (si

1.下列函数有些什么奇点?如果是极点,指出它的级:(1)(1)/(z(z^2)+1)^(2); (2)(sin z)/(z^3); (3)(1)/(z^3)

求下列函数的奇点:(1)dfrac (z+1)(z({z)^2+1)}; (2)dfrac (z+1)(z({z)^2+1)}求下列函数的奇点:(1)

3.-|||-问∞是否为下列函数的孤立奇点?如果是,指出其奇点类型.-|||-(1).cos 2;-|||-(2) ((1+2z))^2;-|||-(3) df

5.7 求出下列函数在有限孤立奇点处的留数:-|||-(1) dfrac ({e)^x-1}(z);-|||-(2) dfrac ({z)^7}((z-2){(

(z)=(z)^2+dfrac (1)({z)^2+1}，则其解析区域为( )(z)=(z)^2+dfrac (1)({z)^2+1}(z)=(z)^2+dfr

6.求下列函数在有限孤立奇点处的留数.-|||-(1) dfrac (z+1)({z)^2-2z} ;

z=0是函数(z)=dfrac (z)(sin {z)^2cdot ((e)^z-1)}的几级极点A 1 B 2 C 3 D 4z=0是函数的

1.求下列函数的留数:-|||-(1) (z)=dfrac ({e)^z-1}({z)^5} 在 z=0 处;-|||-(2) (z)=(e)^dfrac (1

[ dfrac (sin z)({z)^2},0] =-|||-A 1-|||-B .-1-|||-C dfrac (1)(2)