函数F(X)=【①2x^3+3x^2+1（x≤0）,②e^ax（x>0）】在区间[-2,2]上的最大值为2,则a的取值范围

函数F(X)=【①2x^3+3x^2+1（x≤0）,②e^ax（x>0）】在区间[-2,2]上的最大值为2,则a的取值范围
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