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KRISHNA MURTHY IIT ACADEMY

KRISHNA MURTHY IIT ACADEMY. FUNCTIONS By Krishna Murthy. Let X and Y be two nonempty sets of real numbers. A function from X into Y is a rule or a correspondence that associates each element of X with a unique element of Y. The set X is called the domain of the function.

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MATH 141

MATH 141. Chapter 1: Graphs and Functions (Review). Distance Formula. 1.1. Example: Find distance between (-1,4) and (-4,-2). Answer: 6.71. Midpoint Formula. Example: Find the midpoint from P 1(-5,5) to P 2(-3,1). Answer: (-4,3). y. ( x , y ). r. ( h , k ). x. 1.2.

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Coming after you with Ch. 2: Functions and Their Graphs 2.1: Functions Learning Targets:

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