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geometrical progression [series] 幾何級數,等比級數。

geometrical projection

Especially , the unknowns of the algebraic equations about 3 - dimensional problems increase as geometrical progression compared with 2 - dimensiond problems . so development of computers can not meet their needs 特別地,三維問題最終產生的代數方程組未知數的個數與二維問題相比,將按幾何級數急劇增加,即使計算機技術飛速發展,也難以滿足它們的需求。

It is only by assuming an infinitely small magnitude , and a progression rising from it up to a tenth , and taking the sum of that geometrical progression , that we can arrive at the solution of the problem 只有假設出無窮小數和由無窮小數產生的十分之一以下的級數,再求出這一幾何級數的總量,我們才能得出問題的答案。