Sunday, August 2, 2009

Express the function:in words.?

Express the function (or rule) f(x) = (1/3x - 2)(square root) in words.





a. Subtract 2, then take the square root


b. Divide by 3, then subtract 2


c. Divide by 3, then square


d. Divide by 3, subtract 2, then take the square root`


e. Divide by 3, take the square root, then subtract 2

Express the function:in words.?
d.





first off, you do anything in perentheses first.


follow PEMDAS, also known as the order of operations.


P = perentheses


E = exponent


M = multplication


D = division


A = addition


S = subtraction





multiplication/division can be interchangeable, as can addition and subtraction.





you can't go wrong :)
Reply:Hi,





I'm not sure what you want here. It seems that you want just the opposite of what you asked.





I would guess that the answers would be the following:





a: f(x) = sqrt(x - 2)





b: f(x) = (x - 3) / 2





c: f(x) = (x / 3)²





d: f(x) = sqrt((x / 3) - 2)





e: f(x) = sqrt(x / 3) - 2





*************





Okay, now I get it. The answer is d.





James :-)
Reply:d


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