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Differential Calculus

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Joined: 10 May 2010
Post: 18
17 May 2010 12:51:28 IST
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x+x+x+...x times=x^2 differentiating both sides 1+1+1+1+...x times=2x this implies x=2x or
None

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

differentiating both sides

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

this implies

x=2x

or 1=2

find mistake


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bladeX -rise of a new sun's Avatar

Blazing goIITian

Joined: 12 Dec 2007
Posts: 1249
17 May 2010 13:01:21 IST
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the mistake is the jump from 1st step to 2nd step and it is so idiotic that i wont comment anything on it....
varun malladi's Avatar

Cool goIITian

Joined: 29 Apr 2010
Posts: 65
18 May 2010 00:18:49 IST
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look u got x=2x........u can only cancel x on both d sides IF AND ONLY IF X IS NOT EQUAL TO ZERO...........but substitute x=0 in the given equation....it satisfies!



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