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Maximaでシリーズの次の一般用語をどのように入力しますか?
http://www.texify.com/img/%5CLARGE%5C%21u_%7Ba%7D%5E%7Bm%2Cn%7D%28h%29%3A%3D%28-h%29%5E%7Bn-a %7D%5Csum_%7Bj%3D0%7D%5E%7Bm-n%7D%28-1%29%5Ej%5C%28%5Carray%7Ba-n%5C%5C%5Cvspace%7B3%7D%5C%5Cn %7D%5C%29%281%2Bh%29%5Ej.gif
さて、最初に二項式を合計の外に出すことができ、合計を閉じた形で実行することができます:
とにかく、あなたが与えた表現全体が最大値に入力されます
u(a, m, n) := (-h)^(n-a) * sum((-1)^j * binomial(a-n,n) * (1+h)^j, j, 0, m-n);