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9. Find the intervals on which f is increasing and the intervals on which it is decreasing. f(x) = x² Inx²+3 Select the corre

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f(x)= x²lu x² + 3 $ (exte, m *** 2) 0 - 2x + 2x (In x?) -0 = 2x (it en (x²)) = 0 = x=0 and en x²=-1. oo f(x) is not defined

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