已知函数 f(x)=5sinxcosx-5 3 co s 2 x （其中x∈R）．求：①函数f（x）的最小正周期；
已知函数f(x)=5sinxcosx-5(√3)/2×cos...
\u5df2\u77e5\u51fd\u6570f\uff08x\uff09=5sinxcosx-5 cos 2 x+ \uff08\u5176\u4e2dx\u2208R\uff09\uff0c\u6c42\uff1a\uff081\uff09\u51fd\u6570f\uff08x\uff09\u7684\u6700\u5c0f\u6b63\u5468\u671f\uff1b\uff082\uff09\u51fd\u6570f\uff08x
\u89e3\uff1a\uff081\uff09\u03c0\uff1b\uff082\uff09\u589e\u533a\u95f4\u4e3a \uff0c\u51cf\u533a\u95f4\u4e3a \uff08k\u2208Z\uff09\u3002
\u8fd9\u4e2a\u9898\u4e3b\u8981\u662f\u4e09\u89d2\u51fd\u6570\u53d8\u6362\u4ee5\u53ca\u8f85\u52a9\u89d2\u516c\u5f0f\u7684\u4f7f\u7528\u2026\u2026\u8fc7\u7a0b\u5982\u4e0b
\u613f\u5bf9\u4f60\u6709\u5e2e\u52a9
