For one to one function each element in the domain is mapped on to an one and only one element in the co-domain.
The could be some elements in the co-domain that are not being used.
For a function to be one to one, then for
![f(x) = f(y)](https://tex.z-dn.net/?f=f%28x%29%20%3D%20f%28y%29%20)
if and only if
![x = y](https://tex.z-dn.net/?f=x%20%3D%20y)
For an onto function all the elements in the co-domain must be used up.
In order words, the
![co-domain=Range](https://tex.z-dn.net/?f=%20%3CB%3Eco-domain%3DRange%3C%2FB%3E)
The condition is
![f(x) \rightarrow \: y](https://tex.z-dn.net/?f=f%28x%29%20%5Crightarrow%20%5C%3A%20y)
Meaning each
You didn't give us the choices. It doesn't matter. I think you're trying to write
![\displaystyle {6 \choose 4} (2x)^2 (-y^2)^4](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%7B6%20%5Cchoose%204%7D%20%282x%29%5E2%20%28-y%5E2%29%5E4%20)
![= \dfrac{6!}{4! 2!} ( 4x^2 y^8)](https://tex.z-dn.net/?f=%20%3D%20%5Cdfrac%7B6%21%7D%7B4%21%202%21%7D%20%28%204x%5E2%20y%5E8%29)
![= \dfrac{6(5)}{2} ( 4x^2 y^8)](https://tex.z-dn.net/?f=%20%3D%20%5Cdfrac%7B6%285%29%7D%7B2%7D%20%28%204x%5E2%20y%5E8%29)
![=60x^2 y^8](https://tex.z-dn.net/?f=%20%3D60x%5E2%20y%5E8)
Answer: 60 x² y⁸
Answer:
y = -2
Step-by-step explanation:
You substitute 2 as x, y = 6 - 4 * 2, which is y = 6 - 8 = -2.
Answer:
1 is x=12
2 is x= 1/5
Step-by-step explanation:
For equation number 1 you just add 10 and 2, which is 12.
For equation number 2 you divide 2 by 10 and simplify it to 1/5. So x = 1/5