选择题
1题C=3/2
2题D=2+cosx
3题B
4题B=3(2+x)²
5题D=3
6题A
7题C=1/2x²+c
8题C=2
9题D=3x²
10题B=1
填空题
11题e²
12题3x²
13题4(x-3)的三次方
14题-sin(x-2)
15题1/2lnx+c
16题0
17题3x+2y-2z=0
18题3dx+2ydy
19题y=x的三次方+c
20题2
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