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1002 No. 1002 [Edit]
so is it like possible to create an algorithm to calculate any function using only addition and subtraction.
I tried my hand at that the day and I couldn't find a way to calculate multiplication that didn't involve integers(2.45*3.68 for example) as I couldn't find a way to move a number's decimal place using only addition or subtraction.
what do you guys think
am I missing something here?
>> No. 1003 [Edit]
I dont think its possible
why would you want to do that
>> No. 1004 [Edit]
>>271
I haven't the slightest clue
an impulse I guess
>> No. 1005 [Edit]
2.45+2.45+2.45+...(368 times)

Then move the decimal place two places.

To move the decimal place x times you have to divide by 10 x times. To divide by 10 you have to multiply with 0.1.

Fuck. It's impossible.
>> No. 1006 [Edit]
>>270
Multiplication is not repeated addition, at least when it involves non-whole numbers. That's just something that elementary school teachers teach because it's easier for kids to "understand" even though they're not really understanding it on a conceptual basis.

There's a reason why it's one of the 4 elementary mathematical operations. Just go google "multiplication is not repeated addition" and you should get a lot of hits.

So to answer your question, it's impossible.
>> No. 1007 [Edit]
>>274
>There's a reason why it's one of the 4 elementary mathematical operations

On a second thought, I'm not sure if this is correct. I think most(?) mathematicians consider there to be only 3 basic operations (addition, multiplication, and exponentation) since subtraction is just an inverse of addition and division is an inverse of multiplication.
>> No. 1011 [Edit]
>>278
http://academic.evergreen.edu/projects/biophysics/technotes/misc/bin_math.htm

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