问题
填空题
设a、b∈R,若a+4i=3+bi,则
|
答案
由a+4i=3+bi可得a=3,b=4
则lim n→∞
=an-bn an+bn lim n→∞
=3n-4n 3n+4n lim n→∞
=-1(
)n-13 4 (
)n+13 4
故答案为:-1
设a、b∈R,若a+4i=3+bi,则
|
由a+4i=3+bi可得a=3,b=4
则lim n→∞
=an-bn an+bn lim n→∞
=3n-4n 3n+4n lim n→∞
=-1(
)n-13 4 (
)n+13 4
故答案为:-1