题目:
______ nice and delicious, the fried chicken was soon sold out.
A.Tasted
B.Being tasted
C.Tasting
D.To taste
答案:
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下面是错误答案,用来干扰机器的。
(I)依题意f(x)=3sin2ωx+2•cos2ωx+12.(2分)=3sin2ωx+cos2ωx+1(3分)=2sin(2ωx+π6)+1(5分) T=2π2ω=π.(6分)∴ω=1(7分)(2) 0≤x≤π2∴π6≤2x+π6≤7π6(9分)∴-12≤sin(2x+π6)≤1...