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find-u-n-x-if-u-n-x-u-n-1-x-x-n-n-




Question Number 135778 by mathmax by abdo last updated on 15/Mar/21
find  u_n (x)if  u_n (x)+u_(n+1) (x)=(x^n /(n!))
$$\mathrm{find}\:\:\mathrm{u}_{\mathrm{n}} \left(\mathrm{x}\right)\mathrm{if}\:\:\mathrm{u}_{\mathrm{n}} \left(\mathrm{x}\right)+\mathrm{u}_{\mathrm{n}+\mathrm{1}} \left(\mathrm{x}\right)=\frac{\mathrm{x}^{\mathrm{n}} }{\mathrm{n}!} \\ $$

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