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证明:(1)已知x,y都是正实数,求证:x3+y3≥x2y+xy2,(2)已知a,b,c∈...
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证明:
(1)已知x,y都是正实数,求证:x
3+y
3≥x
2y+xy
2,
(2)已知a,b,c∈R
+,且a+b+c=1,求证:
.
相关试题
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证明:
(1)已知x,y都是正实数,求证:x3+y3≥x2y+xy2,
(2)已知a,b,c∈R+,且a+b+c=1,求证:.
-
证明:
(1)已知x,y都是正实数,求证:x3+y3≥x2y+xy2,
(2)已知a,b,c∈R+,且a+b+c=1,求证:.
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证明:
(1)已知x,y都是正实数,求证:x3+y3≥x2y+xy2,
(2)已知a,b,c∈R+,且a+b+c=1,求证:.
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证明:
(1)已知x,y都是正实数,求证:x3+y3≥x2y+xy2,
(2)已知a,b,c∈R+,且a+b+c=1,求证:.
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证明:
(1)已知x,y都是正实数,求证:x3+y3≥x2y+xy2,
(2)已知a,b,c∈R+,且a+b+c=1,求证:.
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证明:
(1)已知x,y都是正实数,求证:x3+y3≥x2y+xy2,
(2)已知a,b,c∈R+,且a+b+c=1,求证:.
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证明:
(1)已知x,y都是正实数,求证:x3+y3≥x2y+xy2,
(2)已知a,b,c∈R+,且a+b+c=1,求证:.
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证明:
(1)已知x,y都是正实数,求证:x3+y3≥x2y+xy2,
(2)已知a,b,c∈R+,且a+b+c=1,求证:.
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选修4-5:不等式选讲
(Ⅰ)已知x,y都是正实数,求证:x3+y3≥x2y+xy2;
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选修4-5:不等式选讲
(Ⅰ)已知x,y都是正实数,求证:x3+y3≥x2y+xy2;
(Ⅱ)已知a,b,c都是正实数,求证:.