x=-90, f(x)=3+4=7
所有跟帖:
• not right by looking at the graph. -酷胖- ♀ (185 bytes) () 03/09/2015 postreply 17:54:15
• sin(-270)=1, cos (-360)=1 ? -yddad- ♂ (0 bytes) () 03/09/2015 postreply 18:00:29
• not right by looking at the graph. -酷胖- ♀ (185 bytes) () 03/09/2015 postreply 17:54:15
• sin(-270)=1, cos (-360)=1 ? -yddad- ♂ (0 bytes) () 03/09/2015 postreply 18:00:29