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Derivative of the inverse
dy/dx [g(x)]=1/[f’(x)] at a point dy/dx[g(a)]=1/[f’(b)]
Where g(x) is the inverse of f(x) (not using f-1(x)
Interval
Ex: [x, x2]
Means what happens during that range
Secant line
average rate of change over an interval
Secant (average) is only good for certain things, ie. secant of of sinx is 0
Equivalence Conditions
Instantaneous rate of change (ROC) at x2 is the equivalent of finding
The derivative at x2 which is
Equivalent to the slope of the tangent line at x2