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tripke

  • 3 years ago

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

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  1. Algebraic!
    • 3 years ago
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    the first step is plugging 'a' into \[\frac{ f(x) -f(a) }{x-a}\]

  2. Algebraic!
    • 3 years ago
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    the second step is using the given: f(x) = 1/x

  3. Algebraic!
    • 3 years ago
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    the third steps is finding a CD in the numerator and then simplifying

  4. Algebraic!
    • 3 years ago
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    the last step is taking the limit x->2

  5. tripke
    • 3 years ago
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    Can you show me how to find a common denominator...That is the step that I am really lost at

  6. Algebraic!
    • 3 years ago
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    \[\frac{ 1 }{x } *\frac{ 2 }{2}- \frac{ 1 }{2} *\frac{ x }{x} = \frac{ 2-x }{ 2x }\]

  7. tripke
    • 3 years ago
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    thank u!

  8. Algebraic!
    • 3 years ago
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    sure

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