Let f (x) = x5 + x3 + 2x − 1.The function f is increasing on the following interval(s):   (a, b) [a, b]      (−∞, a) (−∞, a] (a, ∞) [a, ∞) (−∞, a) ∪ (b, ∞) (−∞, a] ∪ [b, ∞) (−∞, ∞) None a =  b =     f is decreasing on the following interval(s): (c, d) [c, d]      (−∞, c) (−∞, c] [c, ∞) (c, ∞) (−∞, c) ∪ (d, ∞) (−∞, c] ∪ [d, ∞) (−∞, ∞) None c =  d =

Question
Let f (x) = x5 + x3 + 2x − 1.

The function f is increasing on the following interval(s):

 

(a, b)
[a, b]
    
(−∞, a)
(−∞, a]
(a, ∞)
[a, ∞)
(−∞, a) ∪ (b, ∞)
(−∞, a] ∪ [b, ∞)
(−∞, ∞)
None



a =  
b =  

 

f is decreasing on the following interval(s):



(c, d)
[c, d]
    
(−∞, c)
(−∞, c]
[c, ∞)
(c, ∞)
(−∞, c) ∪ (d, ∞)
(−∞, c] ∪ [d, ∞)
(−∞, ∞)
None



c =  
d =  
 

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MathCalculus

Functions