Asked by Noel
a. For the following function, find f (a).
b. Determine an equation of the line tangent to the graph of f at (a,f(a)) for the given value of a.
f(x)= 9/(x+4) ,a=6
b. Determine an equation of the line tangent to the graph of f at (a,f(a)) for the given value of a.
f(x)= 9/(x+4) ,a=6
Answers
Answered by
oobleck
didn't we do this already?
f(a) = 9/(a+4)
find f'(2). That is the slope of your tangent line. Then its equation is
y-f(2) = f'(2) (x-2)
f(a) = 9/(a+4)
find f'(2). That is the slope of your tangent line. Then its equation is
y-f(2) = f'(2) (x-2)
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