📝 Functions defined by parts are composed of different behaviors on different intervals.

📊 These functions can be represented as piecewise graphs, with each interval having a different function.

📉 The behavior of the function changes abruptly at the endpoints of each interval.

📝 The video discusses a function defined by parts with multiple constant values in different intervals.

🔄 The function has jumps at specific intervals, resulting in different constant values.

🔍 To describe the function, we need to consider the three intervals where it takes distinct values.

📊 The video explains the concept of piecewise defined functions.

🔢 An example is used to illustrate how to define a function on different intervals.

🔄 The function value changes depending on the interval it falls into.

📚 The video explains the concept of functions defined by parts.

⚠️ It emphasizes the importance of using a strict inequality in the interval.

🔢 The example demonstrates how a piecewise function behaves in different intervals.

📚 Functions defined by parts have constant values within each interval.

⚠️ The function should have a single value at the point of transition between intervals.

🔎 It is important to know exactly where the transition points occur in a function defined by parts.

📝 Functions defined by parts have specific values for different intervals.

🔄 The function values may be the same or different for a number in different intervals.

✅ The function is defined for the interval from -1 to 9, including -1 and 9.

📈 The function value in the given interval is -7.

📚 The use of function notation is observed to be useful.

😄 The speaker enjoyed exploring these functions.

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