Looks good! . . . Nice work!
Uh, Soroban, that picture is copied from the answer key and is what janedoe is asking about!
janedoe, exactly how you would put it into a calculator depends on the calculator.
You certainly should be able to put in , for the straight line. The parabola is, of course, [tex]y2= 2x- x^2[/itex].
Finally, they know it is "similar to graph of the derivative of f(x)" because the derivative is given by and 0.01 is not very far from 0.