Mathematics
chelsy19
2017-08-13 07:51:45
Which of the following is an even function? f(x) = (x – 1)2 f(x) = 8x f(x) = x2 – x f(x) = 7
ANSWERS
leia07
2017-08-13 14:13:37

A function is even when f(x) = f(-x). Assessing the given functions. f(x) = (x - 1)^2 = x² - 2x + 1              ;  f(-x) = (-x - 1)^2 = x² + 2x + 1                            NOT EVEN f(x) = 8x    ; f(-x) = -8x           NOT EVEN f(x) = x^2 - x   ; f(-x) = (-x)^2 + x = x² + x    NOT EVEN f(x) = 7      ; f(-x) = 7               EVEN Thus, the answer is the last function

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