def dmp_diff_in(f, m, j, u, K):
 if ((j < 0) or (j > u)):
  raise IndexError(('0 <= j <= %s expected, got %s' % (u, j)))
 return _rec_diff_in(f, m, u, 0, j, K)

def dmp_diff_in ( f , m , j , u , K ) : if ( ( j < 0 ) or ( j > u ) ) : raise IndexError ( ( '0 <= j <= %s expected, got %s' % ( u , j ) ) ) return _rec_diff_in ( f , m , u , 0 , j , K )
m-th order derivative in x_j of a polynomial in k[x] .