当X→0时,X^a与sin ^3X^2为等价无穷小,则a等于多少?
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当X→0时,X^a与sin ^3X^2为等价无穷小,则a等于多少?
当X→0时,X^a与sin ^3X^2为等价无穷小,则a等于多少?
当X→0时,X^a与sin ^3X^2为等价无穷小,则a等于多少?
sin³x² 等价于 (x²)³=x^6
所以a=6
当X→0时,X^a与sin ^3X^2为等价无穷小,则a等于多少?
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