- #1
Apteronotus
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I've come across the following summation
[tex]lim_{\stackrel{\Delta t \rightarrow 0}{n \rightarrow \infty}}\left(\Delta t \sum_{k=0}^n x^k\right)[/tex]
moreover, as [tex]\Delta t \rightarrow 0, x\rightarrow 1^-[/tex]
Does the sum converge? to what?
My thoughts...
The sum as [tex]n \rightarrow \infty [/tex] is simply the Mclaren series of [tex](1-x)^{-1}[/tex], so as [tex]x \rightarrow 1^- [/tex], the sum should diverge to [tex]+ \infty[/tex], however, we have the [tex]\Delta t[/tex] in the front that [tex] \rightarrow 0[/tex], and that's as far as my intellect takes me...
any ideas?
[tex]lim_{\stackrel{\Delta t \rightarrow 0}{n \rightarrow \infty}}\left(\Delta t \sum_{k=0}^n x^k\right)[/tex]
moreover, as [tex]\Delta t \rightarrow 0, x\rightarrow 1^-[/tex]
Does the sum converge? to what?
My thoughts...
The sum as [tex]n \rightarrow \infty [/tex] is simply the Mclaren series of [tex](1-x)^{-1}[/tex], so as [tex]x \rightarrow 1^- [/tex], the sum should diverge to [tex]+ \infty[/tex], however, we have the [tex]\Delta t[/tex] in the front that [tex] \rightarrow 0[/tex], and that's as far as my intellect takes me...
any ideas?
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