profile
Опубликовано 5 лет назад по предмету Математика от caesarisdead

Решите неравенство frac{5x+8}{4-x} textless  2

  1. Ответ
    Ответ дан arsenlevadniy
    frac{5x+8}{4-x} textless  2, \ left { {{4-xneq0,} atop {frac{5x+8}{4-x}-2 textless  0;}} right.  left { {{xneq4,} atop {frac{5x+8-8+2x}{4-x} textless  0;}} right.  left { {{xneq4,} atop {frac{7x}{4-x} textless  0;}} right.  left { {{xneq4,} atop {frac{x}{x-4} textgreater  0;}} right.    left { {{xneq4,} atop x(x-4) textgreater  0;}} right.
    left [ { left { {{x textless  0,} atop {x-4 textless  0,}} right. } atop { left { {{x textgreater  0,} atop {x-4 textgreater  0;}} right. }} right.  left [ { left { {{x textless  0,} atop {x textless  4,}} right. } atop { left { {{x textgreater  0,} atop {x textgreater  4;}} right. }} right.  left [x textless  0, } atop {x textgreater  4; }} right. \ xin(-infty;0)cup(4;+infty).
Самые новые вопросы