Question

for y = tan^-1 (x-1/x+1) find
a) domain
b) y intercept and x intercept
c) symmetry ? even or odd function
d) asymptotes
e) intervals of increase and decrease
f) local max and min
g) concavity
Having a hard time with this one!

Answer 1

the domain for tan^-1 is XER, but since the denominator has x+1 does that mean x cannot equal 1 is the domain??

Answer 2

starrt wid the domain , u now that its not cont ,on tan (x-1/x+1)=0
and its not cont on x+1=0

Answer 3

here ?? u wanna do the rest ??

Answer 4

so x cannot equal -1

Answer 5

yeb true .
now b) y intercept and x intercept
for y intercept put x=0
for x intercept put y=0.
and find the value of both.

Answer 6

y intercept i got - 50

Answer 7

but for x intercept i don't know how to solve