Hi, I'm trying to show that the stability region of this multistep method
is a line segment [-√3 i, √3 i]
So far I've got
π(λ,z)= λ² - 1 - /3 (λ² + 4λ + 1)
= (1 - z/3)λ² + (-4z/3)λ + (-1 - z/3)
I've tried solving for λ using the quadratic formula but haven't gotten anywhere
Could anyone help me with how to go about doing this?
Thank you in advance
What answers did YOU get right?