Question

Система
5x-4 < 0
13/9x^2-16<0

Answer 1

5x-4 < 0⇒5x<4⇒x<0,8
13/9x^2-16<0 ⇒(3x-4)(3x+4)<0
x=4/3 U x=-4/3
x<-4/3 U x>4/3
x∈(-∞;-4/3)