Inflection point of 3y=x^3+3x^2-9x+3

Answer 1

take the 2nd derivative, set it equal to zero and solve for x
that will be the x value of the inflection point, sub it back into the original equation to get the y

your second derivative will be a linear expression, thus easy to solve for x

Answer 2

Thank you for this answer. Great help. ❤️