Find the flaw

x+x+x..x times = x^2

differentiate both sides w.r.t x

1+1+1..x times = 2x

x =2x

what is happenning ?

4 Answers

106

Asish Mahapatra ·2010-08-05 23:00:53

i think there was a QOD based on this long back

diffrentiation condition is

real valued , continous , differential function

so u cannot diffferentiate

x+x+x+....xtimes

moreover wat if x is not natural number

then ' x times ' makes no sense

http://www.targetiit.com/iit-jee-forum/posts/28th-december-2008-1566.html

it s already been done

Sorry i didn't know that

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