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Putnam 1958 November A3

Source: Putnam 1958 November

July 19, 2022
Putnamdifferential equation

Problem Statement

Under the assumption that the following set of relations has a unique solution for u(t),u(t), determine it. du(t)dt=u(t)+0tu(s)ds,      u(0)=1. \frac{d u(t) }{dt} = u(t) + \int_{0}^{t} u(s)\, ds, \;\;\; u(0)=1.