Question

Уравнения с параметром

Answer 1

Задание 381

$1)x-a=1\\\\x = a + 1\\\\a = x - 1\\\\2)5x = a\\\\x = \frac{1}{5}a = 0,2a\\\\ a = 5x\\\\3)\frac x2=a\\\\x = 2a\\\\a = \frac x2\\\\4) x^3 = a\\\\x = \sqrt[3]a\\\\a = x^3$

Задание 382

$1) ax = 10\\\\x = \frac{10}{a}\\\\a = \frac{10}x\\\\2) x = \sqrt{a}\\\\a = x^2\\\\3) |x| = a\\\\x_1 = a\\\\x_2 = -a\\\\a = |x|\\\\4) |x+3| = a\\\\x + 3 = a\\\\x + 3 = -a\\\\x = a - 3\\\\x = -a - 3\\\\a = |x+3|$