Precalculus- Lesson 4-2 Function Notation: Domain of functions

Find the domain of a rational function
Find the domain of a radical functions

[marcilinolamiy]

1. Today I learned about what is a domain function.
2. In radical functions in the even roots You can't have a negative value inside the radical.

[joeypackard]

1.) I learned how to find the domain of a function.
2.) Two domain restrictions for functions are for rational functions, you can't divide by zero, and for radical functions, you can't have a negative value in an even root.
3.) Another function that has a domain restriction is an inverse function

[zacharyreed]

1. common domain restrictions include the inability to divide by 0/ no negative numbers in an even root

[brendanlee]

1. I learned to find the domain of a function without using a graph.
2. In rational functions you are unable to divide by 0 and in radical functions you are unable to have a negative number inside of the radical.
3. A different type of domain restriction can be found in inverse functions.

[vickyv]

2) Domain restrictions include rational functions you cannot divide by zero.
3) Two other functions that have domain restrictions are inverse functions and piece-wise functions.

[rosellealcantara]

1. Even roots cannot have a negative.
2. Inverse functions have domain restrictions

[carlosmiguelclemente]

1 - We learned how to find the domain of a function analytically instead of graphically.
2 - A rational function cannot be divided by zero and a radical function with an even root cannot contain a negative number.
3 - Inverse functions have domain restrictions.

[zacharyreed]

2. you can't divide by zero in rational functions

[TEHBOSS]

1.in a rational function you cant divide by 0 and for a radical function you cant have a negative value inside the radical
2.another domain restriction is on inverse functions