来自侯志坚的问题
已知当x趋向于0时,∫(x,-x)(sin(t)+sin(t^2))d(t)与a(x^k)是等价无穷小,则()A.a=3,k=3/2B.a=2/3,k=3C.a=3,k=2/3D.a=3/2,k=3∫(x,-x)(sin(t)+sin(t^2))d(t)中(x,-x)顺序弄反了,应该是(-x,x)
已知当x趋向于0时,∫(x,-x)(sin(t)+sin(t^2))d(t)与a(x^k)是等价无穷小,则()
A.a=3,k=3/2
B.a=2/3,k=3
C.a=3,k=2/3
D.a=3/2,k=3
∫(x,-x)(sin(t)+sin(t^2))d(t)中(x,-x)顺序弄反了,应该是(-x,x)
1回答
2020-12-24 01:53