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Singular Points in Curves
Functions of One Variable.
IF u be an explicit function of x, which is of a complicated form, it may generally be reduced to the differentiation of simpler functions by means of the theorem
y being some function of x, and u some function of y. This theorem may be extended to any number of functions, so that
a log x
u = log"; which signifies not the nth power of
the logarithm of a, but the nth logarithm of that quantity,