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anonymous
 5 years ago
Can someone teach me how to find the domain of an expression: sqrt(x(x2))
anonymous
 5 years ago
Can someone teach me how to find the domain of an expression: sqrt(x(x2))

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1sqrt(a) is valid for all positive a values

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1so whatever makes the innards go less than zero is bad

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Since it is a sqrt, you cannot have your value inside to be a negative. So, this means that your x(x2) >= 0

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I plotted this function and I got:

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1that looks about right; since you got a quadratic in there its gonna act wierd like that

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1at 0 and 2 we have roots <...........0.........2.........>  + +   +  +  + Domain: (inf,0] or [2,inf)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0can you show the work, please?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the formulas. Analitically

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Im really good at finding the domain graphically

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1sqrt[x(x2)] is already factored out .... i really cant see much else to do with it other than plot it on a number line and show the + ranges

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1x = 0 when x = 0 x2 = 0 when x = 2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0x>=0 x>=2 both inequalities are true

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1<...................0.................2................> x<0;  x>0; + + x<2;   x>2; +  * = + +*= +*+=+

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.1Domain: (inf,0] or [2,inf)
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