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 Pre-Calculus and Calculus
 Eqn of tangent line
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Junior Member

6 Posts

Posted - 09/13/2007 :  11:03:05  Show Profile
Hey guys, im scratching my head on this one... can you give me a nudge in the right direction...

Find the eqn of the tangent line to the functions given below (write eqn of tangent line in y-y1 = m(x-x1) format):

a) y = f(x) = 1/x when x = 2.

b) y = f(x) = sqrt(2x+4) when x = 6.

Thanks in advnace!
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Advanced Member

2731 Posts

Posted - 09/13/2007 :  12:43:04  Show Profile
In each case x1 is the x-value; y1=f(x1); and m=f '(x1).

Edited by - pka on 09/13/2007 12:43:46
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