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shutvik [7]
3 years ago
12

If something is not a function does that mean x does repeat or no.

Mathematics
2 answers:
klemol [59]3 years ago
8 0
No x cant be repeated 
Neko [114]3 years ago
4 0
No "x" can not be repeated, a function has one x-element and one y-element
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Prove that sinxtanx=1/cosx - cosx
maks197457 [2]

Answer:

See below

Step-by-step explanation:

We want to prove that

\sin(x)\tan(x) = \dfrac{1}{\cos(x)} - \cos(x), \forall x \in\mathbb{R}

Taking the RHS, note

\dfrac{1}{\cos(x)} - \cos(x) = \dfrac{1}{\cos(x)} - \dfrac{\cos(x) \cos(x)}{\cos(x)} = \dfrac{1-\cos^2(x)}{\cos(x)}

Remember that

\sin^2(x) + \cos^2(x) =1 \implies 1- \cos^2(x) =\sin^2(x)

Therefore,

\dfrac{1-\cos^2(x)}{\cos(x)} = \dfrac{\sin^2(x)}{\cos(x)} = \dfrac{\sin(x)\sin(x)}{\cos(x)}

Once

\dfrac{\sin(x)}{\cos(x)} = \tan(x)

Then,

\dfrac{\sin(x)\sin(x)}{\cos(x)} = \sin(x)\tan(x)

Hence, it is proved

5 0
3 years ago
What is the following fraction in simplest form 4/16
ladessa [460]

Answer:

1/4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please help me this is due today
Serjik [45]

Answer:

1. 15 (A)

2. 12 (G)

Step-by-step explanation:

1.  We can make an equation out of this...

    3x+3=48

    x is the age of Geoff which is what we are trying to find out

   

    We have to add 3 to both sides of the equation

    3x+3=48

         -3   -3

     ________

    we end up with 3x=45

     we then have to divide 3 by both sides because its the opposite of                

     multipling

    3x=45

    _____

         3

    we get x=15

2.   We can write a problem statement  

      (2 x 9)-6=?

       multiply 2 and 9 <u>FIRST</u>

     

       18-6=?

       your answer is 12

      Your Welcome! Have a great rest of your day! :)

 

       

     

7 0
3 years ago
Evelyn packed this box with 1-inch cubes. Which expression does NOT show how Evelyn can find the volume of the box?
gregori [183]

Answer:

2+3+6 is the incorrect expression

8 0
3 years ago
A number is divisible by 6 if and only if it is divisible by 3.
olga55 [171]
The answer would be D
4 0
3 years ago
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