1.

Let \(f\left( x \right)\) be a function such that\(f\left( {\frac{1}{x}} \right)\; + \;{x^3}f\left( x \right)\) = 0, what is \(\mathop \smallint \limits_{ - 1}^1 f\left( x \right)dx\) equal to?

A. 2 f(1)
B. 0
C. 2 f(-1)
D. 4 f(1)
Answer» C. 2 f(-1)


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