问题
填空题
|
答案
lim x→ π 4
=tan2x cot(x-
)π 4 lim x→ π 4
=
sin2x(sinx-cosx)2 2
cos2x( cosx+ sinx)2 2
(- lim x→ π 4
)=-sin2x 1+sin2x
=-sin π 2 1+sin π 2 1 2
故答案为：-1 2
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|
lim x→ π 4
=tan2x cot(x-
)π 4 lim x→ π 4
=
sin2x(sinx-cosx)2 2
cos2x( cosx+ sinx)2 2
(- lim x→ π 4
)=-sin2x 1+sin2x
=-sin π 2 1+sin π 2 1 2
故答案为：-1 2
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B: Yes. I can see many animals. A: 2.______________________ B: The tigers are fighting. The lions are sleeping. A: Can you see any kangaroos? B: Yes, I can. A: 3.____________________ ? B: The mother kangaroo is jumping. The baby kangaroo is sleeping. A: I like kangaroos very much. 4.__________________________? B: Yes, I do. |