本课配套习题挑战模式1/5
单选题
难度系数:
1.函数y=中,自变量x的取值范围是( )
A: x>1 |
B: x≥1 |
C: x>-2 |
D: x≥-2 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNruS6jOasoeagueW8j+eahOaAp+i0qOWSjOWIhuW8j+eahOaEj+S5ie+8jOiiq+W8gOaWueaVsOWkp+S6juaIluetieS6jjDvvIzliIbmr43kuI3nrYnkuo4w77yM5Y+v5Lul5rGC5Ye6eOeahOiMg+WbtA==
- 答案:QQ==
6Kej77ya5qC55o2u6aKY5oSP5b6X77yaeC0x77yeMO+8jDxicj7op6PlvpfvvJp477yeMS4gPGJyPuaVhemAiUEuIA==
本课配套习题挑战模式2/5
单选题
难度系数:
2.
函数y=中,自变量x的取值范围是( )
A: x≥1且x≠3 |
B: x≥1 |
C: x≠3 |
D: x>1且x≠3 |
一次做对,真牛!
+5奖励规则>
- 提示1:PHA+5qC55o2u6KKr5byA5pa55pWw5aSn5LqO562J5LqOMO+8jOWIhuavjeS4jeetieS6jjDliJflvI/ov5vooYzorqHnrpfljbPlj6/lvpfop6MuPC9wPg==
- 答案:QQ==
PHA+6Kej77ya5qC55o2u6aKY5oSP5b6X77yMeC0x4omlMOS4lHgtM+KJoDDvvIw8YnI+6Kej5b6XeOKJpTHkuJR44omgMy48YnI+5pWF6YCJQS48L3A+
本课配套习题挑战模式3/5
单选题
难度系数:
3.汽车由A地驶往相距120km的B地,它的平均速度是30km/h,则汽车距B地路程s(km)与行驶时间t(h)的函数关系式及自变量t的取值范围是( )
A: S=120-30t(0≤t≤4) |
B: S=120-30t(t>0) |
C: S=30t(0≤t≤40) |
D: S=30t(t<4) |
一次做对,真牛!
+5奖励规则>
- 提示1:IOaxvei9pui3nULlnLDot6/nqIs9MTIwLXTlsI/ml7booYzpqbbnmoTot6/nqIvvvIzoh6rlj5jph4/nmoTlj5blgLzlupTku47ml7bpl7TkuLrpnZ7otJ/mlbDlkozmsb3ovabot51C5Zyw6Lev56iL5Li66Z2e6LSf5pWw5YiX5byP5rGC6KejLg==
- 答案:QQ==
6Kej77ya5bmz5Z2H6YCf5bqm5pivMzBrbS9o77yMPGJyPuKItHTlsI/ml7booYzpqbYzMHRrbe+8jDxicj7iiLRTPTEyMC0zMHTvvIw8YnI+4oi15pe26Ze05Li66Z2e6LSf5pWw77yM5rG96L2m6LedQuWcsOi3r+eoi+S4uumdnui0n+aVsO+8jDxicj7iiLR04omlMO+8jDEyMC0zMHTiiaUw77yMPGJyPuino+W+lzDiiaR04omkNC4gPGJyPuaVhemAiUEuIA==
本课配套习题挑战模式4/5
单选题
难度系数:
4.下列四个函数,其中自变量取值范围相同的是( )
(1)y;(2)y=;(3)y=;(4)y=
A: (1)和(2) |
B: (1)和(3) |
C: (2)和(4) |
D: (1)和(4) |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNruS6jOasoeagueW8j+eahOaAp+i0qOWSjOWIhuW8j+eahOaEj+S5ie+8jOiiq+W8gOaWueaVsOWkp+S6juaIluetieS6jjDvvIzliIbmr43kuI3nrYnkuo4w77yM5Y+v5Lul5rGC5Ye6eOeahOiMg+WbtC4g5Y2z5Y+v56Gu5a6aLg==
- 答案:RA==
6Kej77ya77yIMe+8iXjkuLrlhajkvZPlrp7mlbDvvJs8YnI+77yIMu+8iXgrMeKJpTDvvIzliJl44omlLTHvvJs8YnI+77yIM++8iXgrMeKJoDDvvIzliJl44omgLTHvvJs8YnI+77yINO+8iXjkuLrlhajkvZPlrp7mlbAuIDxicj7liJnoh6rlj5jph4/lj5blgLzojIPlm7Tnm7jlkIznmoTmmK/vvIgx77yJ5ZKM77yINO+8iS4gPGJyPuaVhemAiUQuIA==
本课配套习题挑战模式5/5
单选题
难度系数:
5.如图,在长方形ABCD中,AB=6,AD=4,P是CD上的动点,且不与点C,D重合,设DP=x,梯形ABCP的面积为y,则y与x之间的函数关系式和自变量的取值范围分别是( )
A: y=24-2x;0<x<6 |
B: y=24-2x;0<x<4 |
C: y=24-3x;0<x<6 |
D: y=24-3x;0<x<4 |
一次做对,真牛!
+5奖励规则>
- 提示1:IOagueaNrkRQPXjlj6/lvpdDUD02LXjvvIzlho3moLnmja7moq/lvaLnmoTpnaLnp6/lhazlvI/ku6PlhaXnm7jlupTmlbDlgLzov5vooYzorqHnrpfljbPlj68u
- 答案:QQ==
6Kej77ya4oi1RFA9eO+8jDxicj7iiLRDUD02LXjvvIw8YnI+4oi0eT08aW1nIHdpZHRoPTYgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvOUQvRjMvckJBQ0UxT1ZMRS14Tm9uWEFBQUJIR2c0cXowODA3LnBuZyI+77yIQUIrQ1DvvIkmIzgyMjY7QkM9PGltZyB3aWR0aD02IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzlEL0YzL3JCQUNFMU9WTEUteE5vblhBQUFCSEdnNHF6MDgwNy5wbmciPu+8iDYrNi1477yJJiM4MjI2OzQ9Mu+8iDEyLXjvvIk9MjQtMnjvvIw8YnI+4oi1UOaYr0NE5LiK55qE5Yqo54K577yM5LiU5LiN5LiO54K5Q++8jETph43lkIjvvIw8YnI+4oi0MO+8nHjvvJw277yMPGJyPuaVhemAie+8mkEuIA==