Prove that if
limn→∞Sn−sSn+s=0then limn→∞Sn=s
Hint: Define tn=Sn−sSn+s and solve for Sn
By the hint:
tn=Sn−sSn+s
(Sn+s)tn=Sn−s
Sn(tn−1)=−s−stn
Sn=−s⋅1+tntn−1
limn→∞Sn=−s⋅1+limn→∞tnlimn→∞tn−1
As limn→∞Sn−sSn+s=limn→∞tn=0, it follows:
limn→∞Sn=s
Is my argumentation correct/appropriate?Anything needs to be added?
Much appreciated for your input.
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