1. The problem statement, all variables and given/known data Minimize f(X, Y, Z) = 2XY + 6YZ + 8XZ subject to the constraint XYZ = 12. 2. Relevant equations The gradients of the equations, and XYZ = 12. 3. The attempt at a solution I have the gradients for both of the equations. ∇f = <2Y + 8Z, 2X + 6Z, 6Y + 8X> ∇g = < YZ, XZ, XY> I also have XYZ 12. I have set them up in there separate equations with the λ in them. I have just stuck on how to solve them. Isn't there a way to plug the equations in the my TI - 83 Plus to solve them?