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OpenStudy (anonymous):
limit of (x-1)^2(x+1) as x approaches 3
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OpenStudy (zzr0ck3r):
is there any reason you just cant plug in 3?
OpenStudy (alexwee123):
^^ ya substitute 3 for x
OpenStudy (anonymous):
i dont think. there's any steps i would have to show?
OpenStudy (anonymous):
|dw:1347497171437:dw|
OpenStudy (anonymous):
do you mean this?
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OpenStudy (zzr0ck3r):
note: unless ding so makes you devide by zero, take a sqrt( a negative number ), or take a ln( negative number ), then you can plug in for x
OpenStudy (zzr0ck3r):
you can show what ever step you would in algebra.
OpenStudy (zzr0ck3r):
(3-1)^2 * (3+1) = 2^2 * 4 .....
OpenStudy (anonymous):
\[\lim_{x \rightarrow 2}(x-1)^2(x+1)\]
OpenStudy (anonymous):
sorry not 2 but 3
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OpenStudy (zzr0ck3r):
3 or 2? Not that it makes a dif here, just plug in for x
OpenStudy (zzr0ck3r):
ahh ...
OpenStudy (zzr0ck3r):
now if it where lim x->3 of 1/(3-x) then you could not just plug in for x because you would get 1/0
OpenStudy (zzr0ck3r):
were
OpenStudy (anonymous):
find the indicated one-sided limit. if the limiting value is inifinte indicate whther is is \[+\infty or -\],
\[\lim_{x \rightarrow 4} (3x-9)\]
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