Functions - Cool math Algebra Help Lessons

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Coolmath Algebra
Functions Lesson 2 - Function Notation (page 3 of 3)
---- This algebra lesson introduces function notation

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What about this box?

domain guys -> rule: (square root of the input) + 4 -> range guys

The official notation would be

f( x ) = (square root of x) + 4 ... x guys go in ... and spits "(square root of x) + 4" out

So,
like letting x = 9

YOUR TURN:

Find the official notation for this box, then use the notation to find

domain guys -> rule: 5 - ( input )^2 -> range guys

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