Question

函数y=sin(2x−5)x的导函数为y=2xcos(2x−5)−sin(2x−5)x2y=2xcos(2x−5)−si

Answer 1

y′=

[sin(2x−5)]′x−x′sin(2x−5)

x2=

2xcos(2x−5)−sin(2x−5)

x2，

故答案为：

2xcos(2x−5)−sin(2x−5)

x2．