Jul 14 2009, 11:26 PM
QUOTE(lin00b @ Jul 10 2009, 11:58 AM)
one of my friend pointed this out. admittedly it confuses the heck out of me.
2 * 2 = 2+2;
2 * 3 = 2+2+2;
2 * 4 = 2+2+2+2;
...
x * x = x+x+x+....+x+x (x number of times)
x * x =x^2
therefore,
x^2=x+x+x+x+...+x+x (x number of times)
differentiate,
d/dx(x^2)=2x
d/dx(x+x+x+...+x+x)=1+1+1+1+...+1+1+1 (x number of times)
which equals to x
therefore,
2x=x,
2=1
why not like this??2 * 2 = 2+2;
2 * 3 = 2+2+2;
2 * 4 = 2+2+2+2;
...
x * x = x+x+x+....+x+x (x number of times)
x * x =x^2
therefore,
x^2=x+x+x+x+...+x+x (x number of times)
differentiate,
d/dx(x^2)=2x
d/dx(x+x+x+...+x+x)=1+1+1+1+...+1+1+1 (x number of times)
which equals to x
therefore,
2x=x,
2=1
2 * 2 = 2+2;
2 * 3 = 2+2+2;
2 * 4 = 2+2+2+2;
...
x * y = x+x+x+....+x+x (y number of times)
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