Discover a wealth of knowledge and get your questions answered at IDNLearn.com. Join our platform to receive prompt and accurate responses from experienced professionals in various fields.

The following function is supposed to return -1 when x is negative, +1 when x is positive, or if x is zero. What, if anything, is wrong with the function? def plusMinusZero(x): if x == 0 : return 0 elif x <= 0 : return -1 else x >= 0 : return 1 A. A return statement must be added at the end of the function B. Both occurrences of elif must be replaced with if C. The <= and >= must be replaced with < and > D. Nothing is wrong with the function

Sagot :

def dx(fn, x, delta=0.001):

   return (fn(x+delta) - fn(x))/delta

def solve(fn, value, x=0.5, maxtries=1000, maxerr=0.00001):

   for tries in xrange(maxtries):

       err = fn(x) - value

       if abs(err) < maxerr:

           return x

       slope = dx(fn, x)

       x -= err/slope

   raise ValueError('no solution found')

We appreciate your contributions to this forum. Don't forget to check back for the latest answers. Keep asking, answering, and sharing useful information. Your search for answers ends at IDNLearn.com. Thank you for visiting, and we hope to assist you again soon.