Note XXX vertical XXXX XXXX is marking the asymptote XXX is XXX XXXX of the XXXXXXXX.
Edit 2:
XX graph this by hand, you XXXXX XXXX to XXXXX note XXX above
Then you XXXX XXX XXXXX shape XX the graph (that XX to say XXXX there is a XXXXXXXX XXXXXXXXX XX -1 and a horizontal asymptot at 1
XXXX you XXXXX compare it to other XXXXXXXXX, Here this would most likely XXXX XXXXXXX to XXXXXXXXX XXXX 1/x
XXXXXXX, check the behavior on either XXXX of the XXXXXXXXX
XX XX XXXX from XXX XXXX (XXXXXX below -1, like -1.01 XX we XXXXXXXXX XXXXX) XXX XXXXXXXX is going to be XXXXXXXX XXXXXXX the XXXXXXXXX, x-X is XXXXX to XX negative, XXX the XXXXXXXXXXX, x+1 is XXXX going XX be XXXXXXXX
XXXX XX to say x-4 where x<X XX negative
and x+X XXXXX x&XX;-1 XX negative
so x-X / x+X <-1 is XXXXXXXX
XXX XXXXXXXX XX the right:
we XXXX that very close XXXX -1 XX 4 the XXXXXXXX is still XXXXXXXX
and XX x=X, XXX function XX X
because x-4 XX x=4 is X
and x-1 XX non-zero
so XXX function is XXXXXXX, and zero
So XXX function XXXX cross from XXXXXXXX y values XX XXXXXXXX y XXXXXX XX x=X
and for XXXX segments, the XXXXX XXXX be similar to 1/x (that is to XXX, a partial curve)
Edit 3:
XX find points you XXXXX just make a small table, in the region of interest
(x-4)/(x+1)
so XXXX -10 to 10 you could XXXXXXXXX XXXX point(this XX XXX XXXX detail XXX)
x |
y |
-XX |
X.XXXXXXXXX |
-X |
1.XXX |
-8 |
1.XXXXXXXXX |
-7 |
X.833333333 |
-X |
X |
-X |
X.XX |
-X |
X.666666667 |
-3 |
X.5 |
-X |
6 |
-1 |
#XXX/X! |
X |
-4 |
1 |
-X.X |
X |
-X.XXXXXXXXX |
3 |
-X.XX |
4 |
0 |
X |
0.XXXXXXXXX |
X |
0.285714286 |
X |
X.375 |
X |
0.444444444 |
9 |
0.5 |
XX |
0.XXXXXXXXX |
Noting XXXX at x = -X is XXX XXXXXXXX XXXXXXX
Or, as XXXXX before, you know XXXX it looks XXXX roughly (like X/x)
but shifted such XXXX XX x=4 there is XXX y=0
XXX that the XXXXXXXX asymptote is XX -1 (because x=-1 results in dividing XX XXXX, so no such point exists)
and the XXXXXXXXXX XXXXXXXXX, because it XX a ratio XX X first order polynomials, is XXX ratio of their co-XXXXXXXXXX (x-X)/(x+X) XXXXX it XX XX / 1x in each XXXX, so the XXXXXXXXXX asymptote is at y=1
XX you can XXXX a cross using y=1 as XXX XXXXXXXXX portion, and x=-1 XX XXX XXXXXXXX XXXXXXX
XXX the function XXXX be to the top XXXX, and XXXXXX XXXXX quadrants, with a XXXXX like that of 1/x
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