一逆向思维人们往往喜欢从正向思考问题,而不愿意或很少逆向去思考、探究.但实际上,许多数学问题如果逆向去思考,逆用公式、性质等,常常可以收到很好的效果.例1计算:(1/2)~(2016)×(-2)~(2017).分析:两个幂的底数互为倒数,且指数很大.若能将底数变为乘积运算,则会大大降低运算量.联想幂的运算性质,可先逆向运用同底数幂的乘法法则将(-2)~(2017)变形为 A reverse thinking people tend to think from the positive, but not willing or rarely reverse thinking, exploration. But in fact, many mathematical problems if you reverse thinking, use formulas, nature, etc., can often receive good Effect. Example 1 Calculation: (1/2) ~ (2016) × (-2) ~ (2017). Analysis: The bases of the two powers are reciprocal, and the exponent is large. If you can turn the base into a product operation, It will greatly reduce the computational complexity of the computational power. The power of the association power may be inversed by applying the multiplicative rule of the same power as the base to transform (-2) to (2017) to