Hi all, here is a problem I need help with!
There are three real numbers x that are not in the domain of this image:
What is the sum of those three numbers?
+128406
It's obvious that 0 and -1 are two of the numbers
Let's simplify this
1 1 1 1 x + 1
--------------------- = ---------------- = ---------- = ----------- = -----------
1 + 1 1 + 1 1 + x 2x + 1 2x + 1
----------- --------- ------ --------
1 + 1 x + 1 x + 1 x + 1
---- ------
x x
And -1//2 makes the denominator of this fraction 0
So..... the sum of the three numbers not in the domain is :
0 + (- 1) + ( - 1/2 ) = -3 / 2
