also I’m pretty Sure there are no mistakes for everything up until the 4th power term[I backed up my answer by Solving for y” and then differentiating 1 and 2 times respectively]
I cannot see the steps clearly. I'm sure it's not caused from you. Is there any way to see clearly? or Could you share it with high resolution, if there is this type of option. If not THANKS FOR ALL again... I'm appreciate.
I’m not sure if I’m wrong though
Do you know any way to check the answer to this question, cause I think i got this