求下列函数的差分: (1)yx=c(c为常数),求△yx. (2)yx=x2+2x,求△2yx. (3)yx=ax(a>0,a≠1),求△2yx. (4)yx=logax(a>0,a≠1),求△2yx. (5)yx=sinax,求△yx. (6)yx=x3

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问题 求下列函数的差分:
(1)yx=c(c为常数),求△yx
(2)yx=x2+2x,求△2yx
(3)yx=ax(a>0,a≠1),求△2yx
(4)yx=logax(a>0,a≠1),求△2yx
(5)yx=sinax,求△yx
(6)yx=x3+3,求△3yx

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