If the image of the function y = ax1 + X is symmetric with respect to the line y = x, then a is () A. 1b. - 1C. ± 1D. Any real number
∵ the image of the function y = ax1 + X is symmetric with respect to the straight line y = x ∵ by using the properties of the inverse function, it is known that (1, A2) and (A2, 1) are all on the original function image, (1, A2) and (A2, 1) are different points, that is, a ≠ 2; ∵ a × A21 + A2 & nbsp; = 1 ∵ a = - 1 or a = 2 (rounding off), so a = - 1 can be obtained
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