Question

the function f: x -)x? is decseasing ir​

Answer 1

Answer:

ANSWER

f(x)=x

2

,

f

′

(x)=2x.

f

′

(x)>0 implies 2x>0 or x>0. Hence f(x) is increasing in the interval of (0,∞) and decreasing in the interval (−∞,0).

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