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Published online by Cambridge University Press: 03 November 2016
Recent notes in the Gazette (Vol. 45 (1961), 17-23, 23-25) on the subject of change of variable in a definite (Riemann) integral have prompted me to write about the same subject for an indefinite integral, since it has often seemed to me that the conditions under which this rule is proved are, in a sense, the reverse of those that are needed when it is used in practice.