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January 27, 2015

January 27, 2015

Posted by **Cecille** on Wednesday, March 23, 2011 at 7:39pm.

- Calculus Please Help -
**TutorCat**, Wednesday, March 23, 2011 at 8:10pmx=2 could be rewritten as (2,0)

Look at example 1:

http://www.cliffsnotes.com/study_guide/Tangent-and-Normal-Lines.topicArticleId-39909,articleId-39887.html

- Calculus Please Help -
**Reiny**, Wednesday, March 23, 2011 at 9:49pmf(x) = x^3 - x^2 + x - 1

f'(x) = 3x^2 - 2x + 1

when x=2 , f'(1) = 12 - 4 + 1 = 9

also when x=2, f(2) = 8 - 4 + 2 -1 = 5

so the tangent has a slope of 9 and passes through (2,5)

equation of tangent is y = 9x + b

at (2.5)

5 = 9(2) + b

b = -13

equation of tangent: y = 9x - 13

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