Question: How do I do the code for a, b, and c?

I need help with writing the code, I have this for part a but I dont think it is correct

   with(Student[Calculus1]);
   Tangent(2/(1+exp(-x)), x = 0, output = plot);
 


(a) Find an equation of the tangent line to the curve
                                 2    
                        y = -----------
                            1 + exp(-x)
 at (0,1). 
(b) Graph the curve and the tangent line on the same axes.
(c) Use animate to show how the tangent line to the curve changes as we move along the curve between x=-5 and x=5.
 

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