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Consider the functionf:(-oo, oo) -> (-oo ,oo) defined byf(x) =(x^2 - ax + 1)/(x^2+ax+1) ;0 lt a lt 2. Let g(x)=int_(0)^(e^(x))(f'(t))/(1+t^(2)) dt. Which of the following is true? |
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Answer» G'(x) is positive on `(-oo,0)` and NEGATIVE on `(0,oo)` |
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