00:01
This problem, we need to evaluate the function y2, composed of the function y of 1, evaluated at minus 3.
00:14
We can rewrite this into the expression, y2 on the outside, composed of the function y1, evaluated at minus 3.
00:27
It's equal to y2 of, if you look at our table, when x is minus 3, what is y1? well, when x is minus 3, i see that y1 is equal to minus 4.
00:39
So y1 of minus 3 has output of minus 4, and minus 4 is now our new input into the function y of 2.
00:50
So if i look at my table, when x is minus 4, what is y2? well, when x, or here we have a problem, right? there is no, minus 4 is not in the domain of either function.
01:16
It's not a viable, it's not a realistic option for x...