New D-A-蟺-A-based isomeric sensitizers, PTNn (n = 1-2) and NPTn (n = 1-5), were synthesized using 2H-[1,2,3]triazolo[4,5-c]pyridine (PT) as an auxiliary a... S Chaurasia,JS Ni,WI Hung,... - 《Acs Applied Materials & Interfaces》 被引量: 5发表: 2015年 Co-N doped ...
cos(3π/2 +α)=sinα cos(3π/2 -α)=-sinα 奇变偶不变，符号看象限
宸茬煡鍚戦噺=(2cos蠅x锛�-1)锛� =(sin蠅x-cos蠅x锛�2)锛屽嚱鏁癴(x)= 路+3鐨勫懆鏈熶负蟺銆�锛�2锛� 鑻ュ嚱鏁癴(x)鐨勫浘鍍忓悜宸﹀钩绉�锛屽啀妯 潗鏍囦笉鍙橈紝绾靛潗鏍囦几闀垮埌鍘熸潵鐨�鍊嶏紝寰楀埌鍑芥暟g(x)鐨勫浘鍍忥紝姹傚嚱鏁癵(x)鐨勫...