How can I write an expression for the sum of two(unknown) numbers in terms of just x ?
Can I write:
x=1/y
or ....
x=1/X ?
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How can I write an expression for the sum of two(unknown) numbers in terms of just x ?
Can I write:
x=1/y
or ....
x=1/X ?
More detail please, this question makes no sense (to me at least) as it stands.Quote:
Originally Posted by kbgemini16
RonL
The directions are to create an expression that represents two unknown numbers for which I will use "x" & "y" to represent them. How can I write an expression for their sum in terms of just X
So since it's asking for an expression for the sum of the two unknown numbers I know the expressions that I need to create will have a "+" but I can't show the expression in terms of just "x"
I was thinking that:
f(x)=x+y
or...
f(x)=1/y
or...
f(x)=1/x
I don'rt know, I'm lost because I don't understand the part of the question that asks for the sum in terms of just "x" ....
(Worried)
Quote:
Originally Posted by CaptainBlack
There is something wrong here are X and x the same thing?Quote:
Originally Posted by kbgemini16
Yes "X" & "x" are the samething my error ...(Doh)
Then I think what you ask is impossible. It is possible to create a number thatQuote:
Originally Posted by kbgemini16
encodes two numbers (think of interleaving the digits of a decimal expansion)
RonL
Is it known how x and y are related? In other words can you express one of the unknowns in terms of the other (for example maybe y=x^2)? Then expressing the sum of the two unknowns in terms of just one unknown is a triviality.