Sat Mar 14 16:48:55 2020 

graddsc_test
  R version 3.4.4 (2018-03-15) 
  graddsc seeks the minimum of a function using gradient descent.

  graddsc(x^3+3x^2-1,-2.0,0.01) =  -2.878225 

graddsc_test
  Normal end of execution.
Sat Mar 14 16:48:55 2020