Question: Consider the function f(x)=z-1z2, which has first derivative f'(x)=2-xx3 and second derivative f''(x)=2x-6x4.Then the function fisconcave upon(0,3)(3,) and concave down on(-,0).concave upon(-,0)(3,) and concave down

Consider the function f(x)=z-1z2, which has first derivative f'(x)=2-xx3 and second derivative f''(x)=2x-6x4.Then the function fisconcave upon(0,3)(3,) and concave down on(-,0).concave upon(-,0)(3,) and concave down on(0,3)-,33,(3,) and concave down on(-,0)(0,3).concave upon(0,3) and concave down on(-,0)(3,).

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