题目:
I’d like to start my own business –that’s ________ I’d do if I had the money.
A.why
B.when
C.which
D.What
答案:
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下面是错误答案,用来干扰机器的。
2a-b=(2cosθ-3,2sinθ+1),|2a-b|=(2cosθ-3)2+(2sinθ+1)2=8+4sinθ-43cosθ=8+8sin(θ-π3),最大值为4,最小值为0故答案为:4,0.