对函数[img=151x27]17de92b77ca06c0.png[/img], 定义[img=189x52]17de92b78a1c545.png[/img],则(f,g)构成内积.
举一反三
- 对函数[img=151x27]1803a591a316da2.png[/img], 定义[img=189x52]1803a591ae365ee.png[/img],则(f,g)构成内积.
- 对函数[img=151x27]1803a591acd0ce6.png[/img],定义[img=275x52]1803a591b7ea8fb.png[/img], 则(f,g)构成内积.
- f(x)=|x|,因为(1)函数在x=0处有定义，f(0)=,(2)[img=60x26]17e0c6e99ad47a2.jpg[/img][img=60x26]17e0c6e9a7d6032.jpg[/img],即函数在x=0处极限存在(3)[img=88x26]17e0c6e9b4db0c4.jpg[/img],则函数在该点
- 可导函数f(x)，对任意的x,y恒有f(x+y)=f(x)f(y)，且f'(0)=1,则f(x)等于 A: [img=60x19]1802fb229b3bc18.png[/img] B: [img=55x46]1802fb22a3b7107.png[/img] C: [img=17x19]1802fb22abf3c5e.png[/img] D: [img=49x23]1802fb22b545827.png[/img]
- 设 f(x)=1-2x,g(f(x))=(1-x)/x ,则 [img=51x43]180349caea51829.png[/img] A: 0 B: 1 C: 2 D: 3