Determine the average cost function \( \bar{C}(x)=\frac{C(x)}{x} \). To find where the average cost is smallest, first calculate \( \bar{C}^{\prime}(x) \), the derivative of the average cost function. Then use a graphing calculator to find where the derivative is 0 . Check your work by finding the minimum from the graph of the function \( \overline{\mathrm{C}}(x) \). \( C(x)=\frac{1}{2} x^{3}+5 x^{2}-2 x+50 \) \( \bar{C}(x)=\frac{1}{2} x^{2}+5 x-2+\frac{50}{x} \) Calculate \( \bar{C}^{\prime}(x) \). \( \bar{C}^{\prime}(x)=x+5-\frac{50}{x^{2}} \) \( \overline{\mathrm{C}}^{\prime}(x)=0 \) when \( x=\square \) (Type an integer or decimal rounded to three decimal places as needed.)
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