Find the magnitude of the trig term <math><mstyle displaystyle="true"><mn>2</mn><mi>cos</mi><mrow><mo>(</mo><mi>x</mi><mo>)</mo></mrow></mstyle></math> by taking the absolute value of the coefficient.

The lower bound of the range for cosine is found by substituting the negative magnitude of the coefficient into the equation.

The upper bound of the range for cosine is found by substituting the positive magnitude of the coefficient into the equation.

The range is <math><mstyle displaystyle="true"><mo>-</mo><mn>2</mn><mo>≤</mo><mi>y</mi><mo>≤</mo><mn>2</mn></mstyle></math> .

Interval Notation:

Set-Builder Notation:

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Name | seventy-seven million three hundred eighty-five thousand four hundred eighty-four |
---|

- 77385484 has 16 divisors, whose sum is
**189946296** - The reverse of 77385484 is
**48458377** - Previous prime number is
**11**

- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 46
- Digital Root 1

Name | four hundred eighty-nine million seven hundred twenty-nine thousand one hundred ninety-one |
---|

- 489729191 has 8 divisors, whose sum is
**560424480** - The reverse of 489729191 is
**191927984** - Previous prime number is
**769**

- Is Prime? no
- Number parity odd
- Number length 9
- Sum of Digits 50
- Digital Root 5

Name | one billion six hundred three million seven hundred forty-five thousand four hundred eighty-one |
---|

- 1603745481 has 16 divisors, whose sum is
**2318072960** - The reverse of 1603745481 is
**1845473061** - Previous prime number is
**151**

- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 39
- Digital Root 3