导演:William Dunham
Leonhard Euler (1707-1783) was a man of faith: by evening he led the family Bible study, and by day he manipulated infinite series and assigned limits also by faith, if not by sight. Lacking clear definitions and useful theorems for the concepts of function, limit, and convergence, unencumbered by logical rigor, and despite progressive blindness, Euler did not hesitate to inve...(展开全部)