ከ«በር:ሒሳብ/ይህን ያውቁ ኖሯል?» ለውጦች መካከል ያለው ልዩነት

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መስመር፡ 1፦
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:<math>\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\cdot^{\cdot^{\cdot}}}}}}}}} = 2</math>
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:<math>\frac12+\frac14+\frac18+\frac{1}{16}+\frac{1}{32}\cdots = 1. </math>
 
:<math>1 - \frac{1}{32} + \frac{1}{53} - \frac{1}{74} + \frac{1}{95}+ - \cdots = \frac{\pi}{4}ln 2.</math> =0.69314....
 
:<math>1 - \frac{1}{1^23} + \frac{1}{2^25} +- \frac{1}{3^27} + \frac{1}{4^29} + \cdots = \frac{\pi^2}{64}.</math> = 0.78539....
 
:<math>1 - \frac{1}{1^2} + \frac{1}{32^2} -+ \frac{1}{43^2} + \frac{1}{54^2} -+ \cdots = \ln frac{\pi^2.}{6}</math> =1.64493....
 
:<math> \frac{1}{0!} + \frac{1}{1!} + \frac{1}{2!} + \frac{1}{3!} + \cdots = e. </math> =2.71828.....
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: <math> \sqrt{1+2\sqrt{1+3 \sqrt{1+4\sqrt{1+5\sqrt{1+6\sqrt{1+\cdots}}}}}} = 3. </math>
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:<math> 1+\cfrac{1}{2 + \cfrac{1}{2 + \cfrac{1}{2+ \cfrac{1}{2 + \cfrac{1}{2+{\ddots}}}}}} = \sqrt{2}.</math> = 1.41421...
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ነገር ግን!!
 
: <math> 1 + \frac{1}{2} + \frac{1}{3} + \frac{1}{4} + \frac{1}{5} + \cdots</math> ይህ ዝርዝር [[ሃርሞኒክ ዝርዝር]] ሲባል፣ ከ[[ምንም]] ቁጥር ጋር እኩል ነው፣ ምክንያቱም ያለማቋረጥ እስከ ዘላለም ድረስ ድምር ውጤቱ እያደገ ስለሚሄድ።
የሚከተሉትን ጡቦች በዚህ ዝርዝር መሰረት ብንደረድራቸው፣ ማንኛውንም ክፍተት በድልድይ ማያያዝ እንችላለን፣ ከላይ እንደተጥቀሰው የጎን ርዝመቱ ሳያቋርጥ ስለሚጨምር (እስከ ዘላለም....)። ይሁንና ይህ ሃሳብ በመርህ ደረጃ እውነት ሆኖ በተግባር ግን እማይጠቅም ነው፣ ምክንያቱም የዝርዝሩ ድምር ውጤት እሚያድገው እጅግ ዝግ ብሎ ስለሆነ ነው።
 
[[File:Block_stacking_problem.svg|250px|center]]
 
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:<math>\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\sqrt{2}^{\cdot^{\cdot^{\cdot}}}}}}}}} = 2</math>
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:<math> 1+\cfrac{1}{2 + \cfrac{1}{2 + \cfrac{1}{2+ \cfrac{1}{2 + \cfrac{1}{2+{\ddots}}}}}} = \sqrt{2}.</math>
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: <math> \sqrt{1+2\sqrt{1+3 \sqrt{1+4\sqrt{1+5\sqrt{1+6\sqrt{1+\cdots}}}}}} = 3. </math>