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0 = 1?

redguru

New member
I can show 0 =1, by integrating by parts the following function:

brainteaser1.jpg
 
majutsu said:
this is old joke

of course, dv=dx does not imply next line v=x. This is the trick.

e.g. let v=y+3 and x=y+2
dv(a)=dy=dy(a)
but
v(a)=a+3 not equal to x(a)=a+2


funny old joke though

Yes, a lot of people forget the arbitrary constant in the integrations.
 
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