By comparing the values f(x) and f(-x), determine whether each function is (a) even or (b) odd. Use a graphing calculator to check your answer.
f(x) = x3 + x4
f(x) = x3 + x4andf(-x) = (-x)3 + (-x)4 = -x3 + x4. Since f(x) are f(-x) are neither the same, nor negatives of each other, this function is neither even nor odd.
From the graph it looks like f(x) is trying to be even but failing.
Make sure to notice the bit around the origin where f(x) dips below the y-axis.