Question

URGEEEEEEENTE

resolva as inequações em R :

a) (x²-1)(-x²+4x-3)>0
b) x²-2x+1 / x²-3x+2 < 0

A)X² - 5X + 6 < 0
B)- 2X² + X + 1 < 0
C)4X² - 4X + 1 > 0

Answer 1

Vamos là.

a) (x² - 1)(-x² + 4x - 3) > 0

(x - 3) (x - 1)² (x + 1) < 0

-1 < x < 1

1 < x < 3

b) (x² - 2x + 1 ) /(x² - 3x + 2) < 0

1 < x < 2

A) x² - 5x + 6 < 0

2 < x < 3

B) -2x² + x + 1 < 0

x > 1

x < -1/2

C) 4x² - 4x + 1 > 0

x > 1/2

x < 1/2