Help with domain of a function?
-
-
Answer:
The number inside the square root needs to be >= 0 since you cannot take the square root of a negative number. Furthermore, the denominator cannot be zero because you cannot divide by zero. This means that the number inside the square root must not equal zero. Thus, you have (5-x)*(17+x) > 0, which means 5- x > 0 and 17 + x > 0, or 5-x < 0 and 17+ x < 0. So, -17 < x < 5 will work. The other choice (x > 5 and x < -17) cannot be satisifed by any x. So the domain is (-17,5)
Justin at Yahoo! Answers Visit the source
Other answers
The number inside the square root needs to be >= 0 since you cannot take the square root of a negative number. Furthermore, the denominator cannot be zero because you cannot divide by zero. This means that the number inside the square root must not equal zero. Thus, you have (5-x)*(17+x) > 0, which means 5- x > 0 and 17 + x > 0, or 5-x < 0 and 17+ x < 0. So, -17 < x < 5 will work. The other choice (x > 5 and x < -17) cannot be satisifed by any x. So the domain is (-17,5)
Justin
Put the equation into a graphing calculator and then you can see all possible x-values that the function is at.
LiveLoveLaugh
Nope, the domain is not all real numbers. Substitute number by number to find the domain. {x≤4}
Nope, the domain is not all real numbers. Substitute number by number to find the domain. {x≤4}
Put the equation into a graphing calculator and then you can see all possible x-values that the function is at.
LiveLoveLaugh
Related Q & A:
- What Is The Geometric Meaning Of Third Derivative Of A Function At A Point?Best solution by Mathematics
- How to pass a parameter to a function that is called on an event?Best solution by Stack Overflow
- How to call a function with parameter in a bash script?Best solution by tldp.org
- How to fire a function before and after automatically in a jquery plugin?Best solution by catchmyfame.com
- how to call a function in Python in another function?Best solution by Yahoo! Answers
Just Added Q & A:
- How many active mobile subscribers are there in China?Best solution by Quora
- How to find the right vacation?Best solution by bookit.com
- How To Make Your Own Primer?Best solution by thekrazycouponlady.com
- How do you get the domain & range?Best solution by ChaCha
- How do you open pop up blockers?Best solution by Yahoo! Answers
For every problem there is a solution! Proved by Solucija.
-
Got an issue and looking for advice?
-
Ask Solucija to search every corner of the Web for help.
-
Get workable solutions and helpful tips in a moment.
Just ask Solucija about an issue you face and immediately get a list of ready solutions, answers and tips from other Internet users. We always provide the most suitable and complete answer to your question at the top, along with a few good alternatives below.