Find an equation of the line tangent to the graph of x^2+(y-x)^3=9 at x=1

4 answers

x^2+(y-x)^3=9
at x=1, y=3

2x + 3(x-y)^2 (y' - 1) = 0
y' = 1 - 2x/(3(y-x)^2)
at (1,3) y' = 1 - 2/12 = 5/6

so the tangent line is y-3 = 5/6 (x-1)
you can see that graphs at

www.desmos.com/calculator/kwih0zk661
Thank you
self