title: In Mathematica, how can I cut off the high-order terms in a polynomial?
body: <p>For example, I have a polynomial y＝a_0＋a_1 x + ..... + a_50 x^50. Since I know that the high-order terms are imposing negligible effects on the evaluation of y, I want to cut off them and have something like y＝a_0＋a_1 x + ..... + a_10 x^10, the first eleven terms. How can I realize this?</p>
  
  <p>I thank you all in advance.</p>