2sinX(sinX-2cosX)=0=>sinX=0 or tgX=2
所有跟帖:
• 2nd = was an arrow head -oops_yz- ♀ (0 bytes) () 02/11/2010 postreply 10:34:05
• This is the correct solution. -房奴乙- ♂ (0 bytes) () 02/11/2010 postreply 11:47:08
• 2nd = was an arrow head -oops_yz- ♀ (0 bytes) () 02/11/2010 postreply 10:34:05
• This is the correct solution. -房奴乙- ♂ (0 bytes) () 02/11/2010 postreply 11:47:08