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3 years ago

How do you find the domain & range for #f(T)=sec(piT/4)#?

Mathematics

1 answer:

allsm [11]3 years ago

5 0

Domain and range of what? im not seeing a set of numbers id be happy to help tho

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16x^2-16x=5 solve the equation by completing the square

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2 years ago

24 divided my 6 + 4 to the power of 2

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Step-by-step explanation:

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2 years ago

Tickets to a 3D movie cost $13 for an adult and $6 for each child. Let C represent the number of children's tickets and A repres

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3 years ago

See question in attached photo.

statuscvo [17]

9514 1404 393

Answer:

(a, b) = (-2, -1)

Step-by-step explanation:

The transpose of the given matrix is ...

$A^T=\left[\begin{array}{ccc}1&2&a\\2&1&2\\2&-2&b\end{array}\right]$

Then the [3,1] term of the product is ...

$(A\cdot A^T)_{31}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}1&2&2\end{array}\right]=a+2b+4$

and the [3,2] term is ...

$(A\cdot A^T)_{32}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}2&1&-2\end{array}\right]=2a-2b+2$

Both of these terms in the product matrix are 0. We can solve the system of equations by adding these two terms:

(a +2b +4) +(2a -2b +2) = (0) +(0)

3a +6 = 0

a = -2

Substituting for 'a' in term [3,1] gives ...

-2 +2b +4 = 0

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The ordered pair (a, b) is (-2, -1).

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2 years ago

Give 5 different names for this line? Will give to the brainliest! Thank you.

Korvikt [17]

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Since a line doesn't have endpoints, it doesn't matter which

two points on the line we use to name the line.

I have attached 5 possible names for the line below.

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3 years ago

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