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1.7 Implicit Functions

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Implicit definition of a function:
Defining a function by conditions it satisfies rather than by an explicit formula or algorithm for computing it.
Example:  define y(x) by x2 + y2 =1 and y > 0.
Defining a function as the inverse of another is an implicit definition.


1.8 How much of this was familiar to you?

1.9 The statement cos x is implies what about arccos y and arcsin y? Solution

1.10 Invent a problem to go here.