posted by Anonymous

Find the slope m of the tangent line to the graph of the function at the given point and determine an equation of the tangent line.
f(x) = 2 x - 4 x^2( at ) (-2,-20)
m=
y=

1. Reiny

take the derivative
sub in the x value of the given point to get the slope m
Now use the method you probably learned in grade 9 to find the equation of a line given the
slope and a point on it.

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