The meaning of the is defined for you right there in the problem. It's basically a new abstract binary operator. You could also think of it as a function with two arguments: the number on its left, and the number on its right. Does that help?

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- June 24th 2010, 07:17 AM #1

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- June 24th 2010, 07:20 AM #2

- June 24th 2010, 08:50 AM #3

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- June 24th 2010, 10:59 AM #7

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you are very good , thanks very much again , i was completely lost , have to do a test that includes few models - maths , history , etc and i just got totally mixed up with everything ... ,

is that the right thing to do

f(4,3)=36-18=18

f(18,2)=3x18x2-2x4=108-8=100 ?

- June 24th 2010, 11:03 AM #8

- June 24th 2010, 11:25 AM #9

- June 24th 2010, 11:27 AM #10