The answer is 7i because if you add 4+3i together as an absolute value, it equals to 7 plus the i is 7i
2/9+5/6 in simplest form is 1 1/18
Hope this helped :P
Find the concavity changes of f(x).
Give the x-coordinates.
So, the answer to the multiple choice question is -1 and 5 since those points are where f''(x) changes sign.
Note: You can tell that you're supposed to find the concavity changes of f(x) and not f''(x) because from the graph it's obvious that the concavity of f"(x) doesn't change.
The equivalent expression is A
