SOLUTION: Find the interval on which the function is increasing a) f(x) = |x+1| b) f(x) = x^3 c) f(x) = x^4 d) f(x) = (1)/(x^2+1) Please help me Thank youuuuu

Algebra ->  Inequalities -> SOLUTION: Find the interval on which the function is increasing a) f(x) = |x+1| b) f(x) = x^3 c) f(x) = x^4 d) f(x) = (1)/(x^2+1) Please help me Thank youuuuu      Log On


   

Question 424324: Find the interval on which the function is increasing
a) f(x) = |x+1|
b) f(x) = x^3
c) f(x) = x^4
d) f(x) = (1)/(x^2+1)
Please help me
Thank youuuuu
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
a) [-1, infinity)
b) (-infinity, infinity)
c) [0, infinity)
d) (-infinity, 0]