<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?broccoli haifai hivyo juu ya hali ya kukua kama, kwa mfano, cauliflower soma kuhusu tofauti kati ya broccoli na cauliflower katika nyenzo zetu.  <response>: in particular, the typical two-dimensional case proof of convergence method found, for example, in a textbook by colton and kress, is not applicable in our case. 