例谈三角变换中的若干“升格”策略１５８３００黑龙江省密山市一中毕明黎黑龙江省伊春市卫校于艳红众所周知，降幂、消元、异名化同名等技巧，是处理三角问题中常规技巧．然而有时用升幂、升元、引参等非常规策略，即“升格”策略，更使解答简捷、迅速、优美，方法巧妙别... Some examples of “upgrading” strategies in triangular transformations 158300 Yizhong, Yizhong, Heilongjiang, China, Bi Mingli, Yuchun City, Heilongjiang Province, Health School, Yu Yanhong As we all know, techniques such as denormalization, elimination, and synonymization are techniques for dealing with triangle problems. skill. However, sometimes using non-conventional strategies such as ascending power, ascending yuan, and referring to parameters, ie, “upgrading” strategy, make the solution simple, rapid, beautiful, and clever...