Решите указанные уравнения и округлите ответ до тысячных.
3.17.
1) х² - 0,002809 = 0
2) 3,286х² = 0
3) 2х² - 48,096 = 0
4) (х - 4)² - 28,09 = 0
3.17.
1) х² - 0,002809 = 0
2) 3,286х² = 0
3) 2х² - 48,096 = 0
4) (х - 4)² - 28,09 = 0
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Ответ:
Объяснение:
1) x^2 - 0,002809 = 0
x^2 = 0,002809
x1 = -√0,002809 = -0,053;
x2 = √0,002809 = 0,053
2) 3,286x^2 = 0
x^2 = 0;
x = 0
3) 2x^2 - 48,096 = 0
x^2 = 48,096 : 2 = 24,048
x1 = -√24,048 ≈ -4,904;
x2 = √24,048 ≈ 4,904
4) (x-4)^2 - 28,09 = 0
(x-4)^2 = 28,09
x-4 = -√28,09 = -5,3; x1 = -5,3 + 4 = -1,3
x-4 = √28,09 = 5,3; x2 = 5,3 + 4 = 9,3