This math problem involves finding the equations of the tangent and normal lines to the graph of a function f(x) at a given point (a, f(a)), as well as finding the x-coordinates where the tangent line is horizontal for points on the graph of the function between two x-values.

1. KUIS 4
MATA KULIAH : KALKULUS I
1. Find the equations of the tangent line and the normal line to the graph of
at the point (
2. Find the x-coordinates of all points on the graph of in the
interval at which the tangent line is horizontal.
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