Question

Find the inverse of the function. y = 2x2 -4

Answer 1

Answer: $y=\sqrt[]{\frac{x+4}{2} }$

Step-by-step explanation:

$y=2x^2-4\\x=2y^2-4\\x+4=2y^2\\\frac{x+4}{2}=y^2\\ y=\sqrt[]{\frac{x+4}{2} }$