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MadelineMirror
@MadelineMirror
July 2022
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неравенство. ... СРОЧНО! !!!!
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Wellington
1.
4) 2√3 > 3√2
√(4*3) > √(9*2)
√12 > √18 - не верно
√12 < √18 - верно
Ответ: 4)
2.
3) -2+a < -2+b
Ответ: 3)
3.
a>5
-2a < 5*(-2)
-2a < -10
3-2a < -10+3
3-2a < -7
Ответ: 3-2a < -7
4.
a) (a+3)² > (a+3)(a-3)+6a
a²+6a+9 > a² -9+6a
a²-a²+6a-6a+9+9 > 0
18 > 0
б) (1/a²) + a² > 2
(1+a⁴)/a² > 2
1+a⁴ > 2a²
a⁴ -2a²+1 > 0
(a² -1)² >0
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m11m
Verified answer
1-4
2-2
3- 3-2a<0
как то так
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Answers & Comments
4) 2√3 > 3√2
√(4*3) > √(9*2)
√12 > √18 - не верно
√12 < √18 - верно
Ответ: 4)
2.
3) -2+a < -2+b
Ответ: 3)
3.
a>5
-2a < 5*(-2)
-2a < -10
3-2a < -10+3
3-2a < -7
Ответ: 3-2a < -7
4.
a) (a+3)² > (a+3)(a-3)+6a
a²+6a+9 > a² -9+6a
a²-a²+6a-6a+9+9 > 0
18 > 0
б) (1/a²) + a² > 2
(1+a⁴)/a² > 2
1+a⁴ > 2a²
a⁴ -2a²+1 > 0
(a² -1)² >0
Verified answer
1-42-2
3- 3-2a<0
как то так