6.
\((1)\)已知\(|z|=1\),则\(|z-1+\sqrt{3}i|\)的取值范围是________.
\((2)\)如图甲,在\(\triangle ABC\)中,\(AB⊥AC\),\(AD⊥BC\),\(D\)为垂足,则\(A{{B}^{2}}=BD\cdot BC\),该结论称为射影定理如图乙,在三棱锥\(A-BCD\)中,\(AD⊥\)平面\(ABC\),\(AO⊥\)平面\(BCD\),\(O\)为垂足,且\(O\)在\(\triangle BCD\)内,类比射影定理,探究\(S_{\triangle ABC}\)、\(S_{\triangle BCO}\)、\(S_{\triangle BCD}\)这三者之间满足的关是________.
\((3)\)定积分\(\int_{0}^{1}{(2+\sqrt{1-{{x}^{2}}})dx=}\)________.
\((4)\)直线\(l\)交椭圆\(\dfrac{{{x}^{2}}}{2}+{{y}^{2}}=1\)于\(A\),\(B\)两点,若线段\(AB\)的中点坐标为\((1,\dfrac{1}{2})\),则直线\(l\)的方程为________.