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Unformatted text preview: function
of x ( y s x 2 1 ) and also as a function of u ( y su ). Note that
NOTE Fx x
sx 2 1 whereas dy
du fu 1
2 su In using the Chain Rule we work from the outside to the inside. Formula 2 says
that we differentiate the outer function f [at the inner function t x ] and then we multiply
by the derivative of the inner function.
dx f tx outer
function tx tx evaluated
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