Question

the function f of X equal to 3 /x + 7 is strictly decreasing in the interval​

Answer 1

Answer:

3x+7

x = 7-3

x = 4

Step-by-step explanation:

hope it's help

Answer 2

Answer:

It is given that f(x) = [3/x + 5] By differentiating w.r.t. x f’(x) = 3(-1/x2) = -3/x2 < 0 for all value of R Therefore, f(x) is decreasing for all x ∈ R, where x ≠ 0.Read more on Sarthaks.com - https://www.sarthaks.com/824139/show-that-f-x-3-x-5-is-decreasing-for-all-x-r-where-x-0