The equation of the transformed function is j(x) = -x³/27 + x²/3 - 5
How to determine the equation of the transformed function
From the question, we have the following parameters that can be used in our computation:
f(x) = x³ - 3x² + 2
A horizontal stretch by a factor of 3 is represented as
(x, y) = (x/3, y)
So, we have
g(x) = (x/3)³ - 3(x/3)² + 2
g(x) = x³/27 - x²/3 + 2
A translation 3 units up is represented as
(x, y) = (x, y + 3)
So, we have
h(x) = x³/27 - x²/3 + 2 + 3
h(x) = x³/27 - x²/3 + 5
A reflection in the x axis is
(x, y) = (x, -y)
So, we have
j(x) = -x³/27 + x²/3 - 5
Hence, the equation is j(x) = -x³/27 + x²/3 - 5