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Algebra and Functions Videos 140 videos

SAT Math 4.3 Algebra and Functions
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SAT Math 4.3 Algebra and Functions

SAT Math 2.5 Algebra and Functions
194 Views

SAT Math 2.5 Algebra and Functions

SAT Math 2.3 Algebra and Functions
206 Views

SAT Math 2.3 Algebra and Functions. Calculate this function.

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SAT Math 5.4 Algebra and Functions 291 Views


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Description:

SAT Math 5.4 Algebra and Functions

Language:
English Language

Transcript

00:02

Gettin' shmoopy with it...

00:04

If g of x = the square root of x - 1 to the fourth...what is g of x + 1?

00:09

And here are the potential answers...

00:14

We're working with composite functions, so all we have to do for this is replace the

00:19

instances of x in the first equation with x + 1.

00:24

g of x + 1 = the square root of x + 1 - 1 all to the fourth.

00:33

Using the order of operations, we have to deal with the inside of the parentheses first...

00:40

So we get, x + 1 - 1 = just x.

00:44

So the square root of x to the 4th is just...x squared.

00:49

Looks like our answer's A.

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