Question 246794
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1.  Yes.  There are no possible values for *[tex \Large x] that will yield more than one value for *[tex \Large D(x)].


2.  No.  The value of *[tex \Large D(x)] depends on the value of *[tex \Large x], not the other way around.  *[tex \Large x] is the independent variable.


3.  No.  See for yourself:  *[tex \Large D(6)\ = 2(6)\ \neq\ 3]


4.  Yes.  When *[tex \Large x] gets bigger, *[tex \Large D(x)] gets bigger.  When *[tex \Large x] gets smaller, *[tex \Large D(x)] gets smaller.


5.  You decide.  If all of the following are true, then the answer is yes.  Otherwise, the answer is no.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ D(5)\ =\ 2(5)\ =^?\ 10]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ D(6)\ =\ 2(6)\ =^?\ 12]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ D(-2)\ =\ 2(-2)\ =^?\ -4]



John
*[tex \LARGE e^{i\pi} + 1 = 0]
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