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Pachacha [2.7K]
3 years ago
11

Which function has a domain of all real numbers except x=pi/2+-npi?

Mathematics
2 answers:
OLga [1]3 years ago
8 0
It is rather obvious that we will have to deal with a trigonometric function. Let us see... the first hint is that a function is not defined somewhere. cos and sin are defined for all real numbers... what about tan though? Well, as we approach pi/2, tan becomes larger and larger and it is not defined at pi/2. Given that the tan function has a period of pi (cos and sin have a period of 2pi), this function is the right candidate. Since it is periodic and it is not defined at pi/2, it cannot be defined at any x=pi/2+-npi (if it was defined for some n, then it would have the same value at pi/2 due to periodicity). Hence, a function that works is tanx, or 2*tanx or tanx+6.
lord [1]3 years ago
7 0

Answer:

y=secx

Step-by-step explanation:

A p e x T r i g o n o m e t r y

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A theme park charges $52 for a day pass and $110 for a week pass. Last month, 4,432-day passes were sold and 979-week passes wer
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Answer:    $52 x 4 =230,464    $110 x 979 = 107,690.         ESTIMATED ANSWER: 300,000

230,464

+107,690= 338,154                

Step-by-step explanation: Hope this helped you!

3 0
2 years ago
How are percent error and percent change similar
mihalych1998 [28]
Percent Change = New Value − Old Value|Old Value| × 100%

Example: There were 200 customers yesterday, and 240 today:

240 − 200|200|× 100% = 40200 × 100% = 20%

A 20% increase.

 

Percent Error = |Approximate Value − Exact Value||Exact Value| × 100%

Example: I thought 70 people would turn up to the concert, but in fact 80 did!

|70 − 80||80| × 100% = 1080 × 100% = 12.5%

I was in error by 12.5%

(Without using the absolute value, the error is −12.5%, meaning I under-estimated the value)

The difference between the two is that one states factual calculations and the other is a theoretical guess
5 0
3 years ago
The first term is 8 Each term is 4 more than double the previous term.
xz_007 [3.2K]

Answer:

8*2^(n-1)

Step-by-step explanation:

This is a geometric sequence since we multiply from the previous term.

a_n = a_1 * common ratio^(n-1) where a_n is the nth number and a_1 is the first.

The first term is 8, so we have

a_n = 8*<common ratio>^(n-1) = 8*2^(n-1)

5 0
3 years ago
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Answer:

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Step-by-step explanation:

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