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Question-113897

Question Number 113897 by Lordose last updated on 16/Sep/20 Answered by mathmax by abdo last updated on 17/Sep/20 $$\mathrm{let}\:\mathrm{u}_{\mathrm{n}} =\frac{\mathrm{3}^{\mathrm{n}} }{\:\sqrt{\left(\mathrm{3n}−\mathrm{2}\right)\mathrm{2}^{\mathrm{n}} }}\:\Rightarrow\mathrm{u}_{\mathrm{n}} =\frac{\left(\frac{\mathrm{3}}{\:\sqrt{\mathrm{2}}}\right)^{\mathrm{n}} }{\:\sqrt{\mathrm{3n}−\mathrm{2}}}\:\:\left(\mathrm{n}\geqslant\mathrm{1}\right)\:\Rightarrow \\…

Question-48321

Question Number 48321 by tanmay.chaudhury50@gmail.com last updated on 22/Nov/18 Commented by tanmay.chaudhury50@gmail.com last updated on 22/Nov/18 $${above}\:{questions}\:{based}\:{on}\:\bigtriangleup\:{and}\:{E}\:{operator} \\ $$$${for}\:{example}\: \\ $$$$\bigtriangleup{u}_{\mathrm{1}} ={u}_{\mathrm{2}} −{u}_{\mathrm{1}} \\ $$$${and}\:{Eu}_{\mathrm{1}}…