Image of function f (x) = 4x + 12x () A. On origin symmetry B. on line y = x symmetry C. on X-axis symmetry D. on Y-axis symmetry

F (− x) = 4 − x + 12 − x = 1 + 4x2x = f (x), f (x) is even function, and the image is symmetric about y axis, so D

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