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Differential equations

Anonymous Fri 17 Jul 20:22:20 2020 No.11911070 View Reply Original Report

Quoted By: >>11911092 >>11911255 >>11911408 >>11912113

$\int_{-\infty}^\infty &fnof;(x)^2 dx = \sum_{x=0}^\infty &fnof;(x)$
>number of solutions if any
>if there are any give at least one
good luck bros

Anonymous

Anonymous Fri 17 Jul 2020 20:30:56 No.11911092 Report

Quoted By:

>>11911070
infinitely many
the 0 function

Anonymous

Anonymous Fri 17 Jul 2020 21:42:12 No.11911212 Report

Quoted By:

uncountably many
$\lfloor\frac{sin^8(x)}{8}\rfloor$

Anonymous

Anonymous Fri 17 Jul 2020 21:59:49 No.11911255 Report

Quoted By:

>>11911070
NOrmal distribution

Anonymous

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Anonymous Fri 17 Jul 2020 23:13:15 No.11911408 Report

Quoted By:

>>11911070
If you take any function that's square integrable and such that the sum is finite and non-zero you can multiply if by by some real number to obtain that identity.

Anonymous

Anonymous Sat 18 Jul 2020 05:22:27 No.11912113 Report

Quoted By:

>>11911070
$f_n(x) = 0^n$

Anonymous

Anonymous Sat 18 Jul 2020 07:03:46 No.11912262 Report

Quoted By:

c/(a+|x|)^s with a>0, s>1 and properly chosen c

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