If you can graph this, find the inverse of this function.
Hi,
thank you for asking this question! As a Math AA HL student, although there are various ways that I can solve this question, I recommend you to use a FANTASTIC Graphing Calculator called “Desmos.” If you have any math questions, use this website!
![](https://static.wixstatic.com/media/9922eb_d0dd56ce97d346509d1d845ed0080baf~mv2.png/v1/fill/w_49,h_24,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/9922eb_d0dd56ce97d346509d1d845ed0080baf~mv2.png)
If you look at the graph, the y-intercept is (0,3) and the minimum point is (2.101, 0.583). Since it is not a one-to-one function that passes horizontal line test, we should set the domain to figure out the inverse function of the original function y=(x^2 - 4x + 6)/(x^0.5 + 2).
In the first case, when x is greater than or equal to 2.101, we switch x and y in the original function. We also switch the domain restriction in the original function into range restriction in the inverse function.
![](https://static.wixstatic.com/media/9922eb_7d6f960bdeeb4f7b8d6c2e494996f6dc~mv2.png/v1/fill/w_49,h_24,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/9922eb_7d6f960bdeeb4f7b8d6c2e494996f6dc~mv2.png)
In the second case, when x is smaller than 2.101, through the same process, the inverse function can be drawn below:
![](https://static.wixstatic.com/media/9922eb_86b6ecd4efc34a72bddd11d9e0ecfd36~mv2.png/v1/fill/w_49,h_24,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/9922eb_86b6ecd4efc34a72bddd11d9e0ecfd36~mv2.png)
If you know that inverse functions only exist when the original function is a one-to-one function and the domain and range must be switched, you can easily figure out the inverse function of most of the functions.
Hope this helps!
Dear Letterbox