The function f(x)=x2-2 x is strictly decreasing in the interval

Question

The function f(x)=x2-2 x is strictly decreasing in the interval (A) (-∞, 1) (B) (1, ∞) (C) R (D) (-∞, ∞)

Tardigrade Admin · Accepted Answer

f '( x )<0 ; 2( x -1)<0 x <1 ; x ∈(-∞, 1)

Q. The function $f (x) = x^{2} - 2 x$ is strictly decreasing in the interval