Question

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WA
1) *
If f(x) = x3 + x. Find f(1) + f(-1)​

Answer 1

Answer:

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Step-by-step explanation:

$f(x) = {x}^{3} + x \\ = > f(1) = {1}^{3} + 1 \\ = > 1 + 1 = 2 \\ = > 2$

$f(x) = {x}^{3} + x \\ = > f( - 1) = { (- 1)}^{3} + ( - 1) \\ = > - 1 - 1 = - 2 \\ = > - 2$

According to the question :-

$f(1) + f( -1 ) \\ = > 2 + ( - 2) \\ = > 2 - 2 = 0 \\ = > 0$