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Calculus1 27 Online
OpenStudy (anonymous):

Can someone please explain all the steps to this problem: http://imageshack.us/scaled/landing/28/lateximg.png

OpenStudy (anonymous):

the first step is plugging 'a' into \[\frac{ f(x) -f(a) }{x-a}\]

OpenStudy (anonymous):

the second step is using the given: f(x) = 1/x

OpenStudy (anonymous):

the third steps is finding a CD in the numerator and then simplifying

OpenStudy (anonymous):

the last step is taking the limit x->2

OpenStudy (anonymous):

Can you show me how to find a common denominator...That is the step that I am really lost at

OpenStudy (anonymous):

\[\frac{ 1 }{x } *\frac{ 2 }{2}- \frac{ 1 }{2} *\frac{ x }{x} = \frac{ 2-x }{ 2x }\]

OpenStudy (anonymous):

thank u!

OpenStudy (anonymous):

sure

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