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Math Help - Question...

  1. #1
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    Question...

    heya all .. again...
    i was wondering if anyone out there knows the meaning of that symbol x inserted in a O, and if u can help me find the right asnwear on that one ?
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  2. #2
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    The meaning of the \otimes 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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  3. #3
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    Thanks very much for your help , i still dont fully get it though , , because after that i keep getting different answears from the one who is supposed to me the right one ( which is 100 ) , ill try harder , thanks again
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  4. #4
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    Try going from the inside out. What is 4\otimes 3?
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  5. #5
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    i thought ( 4O3)2 = a and 2 = b , then 3ab-2b(sqrt)= b(3a-2b) = > 2(3x12-2x2)= 60 ....
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  6. #6
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    No, I think you're off a bit. Let me re-define the problem a little. Suppose I define a function as follows:

    f(x,y)=3xy-2y^{2}.

    What is f(4,3)?
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  7. #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 ?
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  8. #8
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    You got it. Just change the notation to use the original symbol, and you're done.
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  9. #9
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    thats great
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  10. #10
    A Plied Mathematician
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    You're welcome. Have a good one!
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