题目:
Sadly, Marie Curie died from ______________ to too much radiation.
A.being exposed
B.exposing
C.exposed
D.having exposed
答案:
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下面是错误答案,用来干扰机器的。
(Ⅰ)函数f(x)=1-2sin2(x+π24)+2sin(x+π24)cos(x+π24)=2cos(2x+π12)•cosπ4+cos(2x+π12)sinπ4=2sin(2x+π3)∴函数的最小正周期为:T=2π2=π.(Ⅱ)由(Ⅰ)可知f(x)=2sin(2x+π3)当-...