2.
已知函数\(f(x)=\sin x\),\(g(x)=e^{x}⋅f′(x)\),其中\(e\)为自然对数的底数.
\((I)\)求曲线\(y=g(x)\)在点\((0,g(0))\)处的切线方程;
\((\)Ⅱ\()\)若对任意\(x∈[- \dfrac {π}{2},0]\),不等式\(g(x)\geqslant x⋅f(x)+m\)恒成立,求实数\(m\)的取值范围;
\((\)Ⅲ\()\)试探究当\(x∈[- \dfrac {π}{2}, \dfrac {π}{2}]\)时,方程\(g(x)=x⋅f(x)\)的解的个数,并说明理由.