Use the Newton's method to find the inflexion points of a function given by (x^3+3x^2-4)/e^x
The derivative of the function is -(x^3-6x-4)/e^x
The Newton's method has the formula xn+1=xn-(f(xn))/f'(xn)
I am unable to proceed with x0 values of 1 and -2.
What initial value should I use?Please help me.