f(x) is decreasing in the interval: Y1=-2(x-2)(x-1)(x+1)(x+2) x=1.58 -1.58 < x < 1.58 x \to \infty x > 1.58 and -1.58 < x < 0. -2 < x < 2.
Added by Gregory S.
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To determine whether f(x) is increasing or decreasing, we need to find the derivative of f(x). The derivative of f(x) can be found by taking the derivative of each term separately. f(x) = -2x - 2x^2 - x + x^2 + 2 Taking the derivative of each term, we Show more…
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