自考第4章2幂级数

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2、 nnc z0n ()nncza a0zzza 0n ()nncza.0za 0n nnc z0z 0z|30n (1)nncz 11 z0n (1)nncz 220z30n (2)nncz 1z 11|4ORz0n nna z0n nna z0n nna zzz0n nna zzR|zR|zR|zR|5ORz0n nna z0z0nna z0n nna z0 0nna znna z0n 0n nna z0n nna zz0z|60n nc0n nc0n nnc zO1zz0n nc0n nnc z0n nnc z0n 0nnc z0z0n nnc z0n|nc|z1|0z1|z0z|0n n

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4、21100n nna z0a 1a z 22a z.nna z .()f z()f z1|zR 0n nnb z0b 1bz 22b z.nnb z .()g z()g z2|zR|z 12,R R()nnab nz0n 0n nna z0n nnb z ()f z()g z0(a 1a z 22a z.nna z ).0(b1bz 22b z.nnb z ).0a 0b()z 0 1a b1 0a b 2()z 0 2a b1 1a b 2 0a b.()nz 0 na b11na b 1 1.nab 0na b.min110n nna z0n nnb z()nnab nz0n 0.110.

5、1nn nz0n 1nncc 0.110.1nn 110.110.1nn limn limn 0.1 101 0n nz110.1n nz0n 0.110.1nn 1(1)10.1n nznz0n 0n 0n nz110.1n nz0n O1z10z1|12limn 1nnaa 0n na,nz1nan nna,nznz0n 0n limn 1nnaa 1nnaa limn l 111nna 1nan 1nnaa limn limn l 12nn 1nnaa limn nna1()1nna limn limn 1nnaa 1nn l 1nnaa limn R 1l13dzaz 0n ()nna

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