Find the Asymptotes,Domain, and graph x(x-8)^2/(x+17)^3
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OpenStudy (anonymous):
some one help please!!
OpenStudy (mathteacher1729):
Start with the domain. Do you know how to go about finding *just* the domain of a function like this?
OpenStudy (anonymous):
no i dont
OpenStudy (anonymous):
i could not figure out how to factor x+17
OpenStudy (mathteacher1729):
Domain means "whatever values of x .. DO NOT "break" the function".
what "breaks" a function?
1. zero in the denominator
2. square root of a negative number
3. log of 0 or log of negative numbers
So look at your function you have...
\[\huge \frac{x(x-8)^2}{(x+17)^3}\]
start with 1. What value (or values) of x makes the denominator zero?
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OpenStudy (anonymous):
-17
OpenStudy (anonymous):
right?
OpenStudy (mathteacher1729):
Yup.
So the domain is all real numbers EXCEPT 17.
Now onto step 2 and 3. Do you see any square roots or logs?
OpenStudy (anonymous):
yes 2 and 3
OpenStudy (mathteacher1729):
Wait what... you see square roots and logs?? Where?
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