ОДЗ:
1) 10x - 3x^2 - 3 >= 0
2) x^2 - 4 > 0
1) D = 100 - 36 = 64, корень D = 8
x1 = (-10 - 8)/-6 = 3
x2 = (-10 + 8)/-6 = 1/3
x Є [ 1/3 ; 3 ]
2) x^2 = 4
x= +-2
x Є (-беск ; -2) u (2 ; +беск)
1/3, не подходит
x Є (2 ; 3]
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Answers & Comments
ОДЗ:
1) 10x - 3x^2 - 3 >= 0
2) x^2 - 4 > 0
1) D = 100 - 36 = 64, корень D = 8
x1 = (-10 - 8)/-6 = 3
x2 = (-10 + 8)/-6 = 1/3
x Є [ 1/3 ; 3 ]
2) x^2 = 4
x= +-2
x Є (-беск ; -2) u (2 ; +беск)
1/3, не подходит
x Є (2 ; 3]