Question 23: Let the function y = f (x) have a graph as shown in the figure. Then f (x ) covariates on what intervals?

Observe the graph of the function y=f(x) we see on \(( -1;0),\left( {1; + \infty } \right)\) The graph of the function is upward, so the function is covariant on \(( -1;0),\left( {1; + \infty } \right)\)

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