Function \( f(x)=x(x+3) e^{-x / 2} \) satisfy all condition of Rolles theorem in the interval \(...

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Function \( f(x)=x(x+3) e^{-x / 2} \) satisfy all condition of Rolles theorem in the interval \( [-3,0] \). Then the value of of \( c= \)
(a) 0
(b) -1
(c) \( -3 / 2 \)
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