What is y '''3) if y equals negative one half x to the fourth power plus two over three x to the third power minus x plus seven question mark

Answer 1

y = -(1/2)x⁴ + (2/3)x³ - x + 7

y' = -2x³ + 2x² - 1

y'' = -6x² + 4x

y''' = -12x + 4

y'''(3) = -12(3) + 4 = -32