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OpenStudy (anonymous):
lim(x->7) (sqrt(x+2)-3)/(x-7) -- how do I determine the limit if it's not undefined?
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OpenStudy (nenadmatematika):
well if you plug in x=7 immediately you'll this ratio ''blows up'', you get 0/0, so you need to perform some algebra so you can avoid that situation....in this case you can do this:|dw:1330530874664:dw|
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