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Playlist Algebra and Functions Test Questions 74 videos

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CAHSEE Math 1.1 Algebra and Functions
291 Views

CAHSEE Math Algebra and Functions: Drill Set 1, Problem 1. At this rate, what is the total cost of 10 songs?

1
CAHSEE Math 1.2 Algebra and Functions
760 Views

CAHSEE Math Algebra and Functions: Drill Set 1, Problem 2. Which of the following represents the statement?

2
CAHSEE Math 1.3 Algebra and Functions
228 Views

CAHSEE Math: Algebra and Functions: Drill Set 1, Problem 3. What equation fits the description?

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SAT Math 2.5 Algebra and Functions 194 Views


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Description:

SAT Math 2.5 Algebra and Functions

Language:
English Language

Transcript

00:02

Put this in your calculator and shmoop it...

00:04

In a sequence, each subsequent term, n, is determined by the formula t sub n equals the

00:11

quantity t sub n minus 1 squared.

00:14

If the first term is the square root of x, what is the fourth term?

00:18

And here are the potential answers...

00:24

This one is just a "fill in the missing numbers of the pattern" problem,

00:27

but, we have to figure out what the pattern actually is...

00:32

So the formula for the pattern is t sub n equals t sub n minus 1 squared.

00:37

Hmm, lot of variables to just say: "any term equals the term before it squared."

00:42

The first number is given.

00:43

All we have to do is find the next numbers in the pattern.

00:47

The first number, squared, should give us the second number of the pattern.

00:51

The square root of x squared equals x.

00:54

The second number squared equals the third number.

00:57

X squared equals...x squared.

01:00

And the third number squared equals the fourth number.

01:03

Remember your exponent rules here... when an exponent is being raised

01:06

to another power, multiply the two powers together.

01:09

So x squared squared equals x to the power of 2 times 2, which is x to the power of 4.

01:16

So D is the correct answer.

01:33

Man... we would kill it playing Simon...

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