数学
高一数学必修一第一单元习题1.1A组选用适当的符号填空:(1)已知集合A={x丨2x-3<3x},B={x丨x≤2},则有:-4B,-3A,{2}B,BA(2)已知集合A={x丨x²-1=0},则有:1A,{-1}A,空集A,{1,-1}A(3){x丨x是菱形}{x丨x是平行四边形} {x丨x是等腰三角形}{x丨x是等边三角形}

2019-05-27

高一数学必修一第一单元习题1.1A组
选用适当的符号填空:
(1)已知集合A={x丨2x-3<3x},B={x丨x≤2},则有:
-4____B,-3____A,{2}____B,B_____A
(2)已知集合A={x丨x²-1=0},则有:
1___A,{-1}_____A,空集____A,{1,-1}_____A
(3){x丨x是菱形}____{x丨x是平行四边形} {x丨x是等腰三角形}______{x丨x是等边三角形}
优质解答
选用适当的符号填空:
已知集合A={x丨2x-3<3x},B={x丨x≥2},则有
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-4(∉)B -3(∉ )A {2}(⊆ )B B( ⊆ )A
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2.已知集合A={x丨x²-1=0}则有
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1( ∈ )A {-1}( ⊆ )A ∅( ⊆ )A {1.-1}( = )A
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3.
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{x丨x是菱形}( ⊆){x丨x是平行四边形}
{x丨x是等腰三角形}(⊇ ){x丨x是等边三角形}
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选用适当的符号填空:
已知集合A={x丨2x-3<3x},B={x丨x≥2},则有
------------------------------------------------------------
-4(∉)B -3(∉ )A {2}(⊆ )B B( ⊆ )A
-------------------------------------------------------------
2.已知集合A={x丨x²-1=0}则有
--------------------------------------------------------------------------
1( ∈ )A {-1}( ⊆ )A ∅( ⊆ )A {1.-1}( = )A
--------------------------------------------------------------------------
3.
--------------------------------------------------------------------------
{x丨x是菱形}( ⊆){x丨x是平行四边形}
{x丨x是等腰三角形}(⊇ ){x丨x是等边三角形}
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