If the zeros m ∈ (a, a + 1), a ∈ Z of the function f (x) = x2 + log2 | x | - 4, then the sum of all a satisfying the condition is () A. 1B. -1C. 2D. -2 | Math enthusiast | Mathematical art

If the zeros m ∈ (a, a + 1), a ∈ Z of the function f (x) = x2 + log2 | x | - 4, then the sum of all a satisfying the condition is () A. 1B. -1C. 2D. -2

The zero point of F (x) = x2 + log2 | x | - 4 is the root of log2 | x | = 4-x2. From the combination of numbers and shapes, we can see that the intersection of two functions is between [- 2, - 1] and [1,2], so a is - 2 or 1, so the sum of all a satisfying the condition is - 1

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