Question: First Year Help - Newton's Method and Iterations

Hey, everyone!

Given the following equation: 

f:=x->x*exp(-x^2); 

 I need to plot the graph when x= 0.4.. How can I do that?

I managed to plot f(x) just fine, just not sure how to plot Newton'sMethod at x= 0.4.

Thanks in advance! :)

 

 

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