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Jan 19th, 2019
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  1. In[708]:= f1x0 = 3.4
  2. f1der[f1x0]
  3. f1x0s = MakeSlope[f1der[f1x0]];
  4. f1x0s[x]
  5. f1x0ydif = f1[f1x0] - f1x0s[f1x0]
  6. f1x0t = f1x0s[x] + f1x0ydif
  7.  
  8. Out[708]= Function[x, 2 x]
  9.  
  10. Out[710]= 3.4
  11.  
  12. Out[711]= 6.8
  13.  
  14. Out[713]= 6.8 x
  15.  
  16. Out[714]= -11.56
  17.  
  18. Out[715]= -11.56 + 6.8 x
  19.  
  20. GetTangent[f_,x0_]:=Module[{fder,der,x,s,ydif,t},
  21. fder=Function[x,Evaluate[D[f[x],x]]];
  22. der=fder[x0];
  23. s=MakeSlope[der];
  24. ydif=f[x0]-s[x0];
  25. t=s[x]+ydif;
  26. t
  27. ];
  28.  
  29. In[705]:= f1t = GetTangent[Function[x, x^2], 2]
  30.  
  31. Out[706]= -4 + 4 x$98923
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