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Let f(x)= a -bx^c + dx^e where a, b,c,d,e >0 and c<e. Suppose that f(x0)= 0...

Let f(x)= a -bx^c + dx^e where a, b,c,d,e >0 and c<e. Suppose that f(x0)= 0 and f '(x0)=0 for some x0>0. Prove that f(x) greater than or equal to 0 for x greater than or equal to 0

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