多项式的末端走向

当 $x \rightarrow \infty$x, right arrow, infinity, $p(x) \rightarrow \infty$p, left parenthesis, x, right parenthesis, right arrow, infinity, 然后当 $x \rightarrow -\infty$x, right arrow, minus, infinity, $p(x) \rightarrow \infty$p, left parenthesis, x, right parenthesis, right arrow, infinity。

当 $x \rightarrow \infty$x, right arrow, infinity, $p(x) \rightarrow -\infty$p, left parenthesis, x, right parenthesis, right arrow, minus, infinity, 然后当 $x \rightarrow -\infty$x, right arrow, minus, infinity, $p(x) \rightarrow \infty$p, left parenthesis, x, right parenthesis, right arrow, infinity。

当 $x \rightarrow \infty$x, right arrow, infinity, $p(x) \rightarrow -\infty$p, left parenthesis, x, right parenthesis, right arrow, minus, infinity, 然后当 $x \rightarrow -\infty$x, right arrow, minus, infinity, $p(x) \rightarrow -\infty$p, left parenthesis, x, right parenthesis, right arrow, minus, infinity。

当 $x \rightarrow \infty$x, right arrow, infinity, $p(x) \rightarrow \infty$p, left parenthesis, x, right parenthesis, right arrow, infinity, 然后当 $x \rightarrow -\infty$x, right arrow, minus, infinity, $p(x) \rightarrow -\infty$p, left parenthesis, x, right parenthesis, right arrow, minus, infinity。