$1.25 | $4.00 | $8.75 | $2.00 | $3.25 | |
Amy | √ | √ | |||
Tom | √ | √ | |||
Linda | √ | √ | |||
Tina | √ | √ | |||
Sam | √ | √ |
1.Amy wants a hamburger and milk. It’s 3.35 dollars.
2.Tom wants a hot dog and milk. It’s 12 dollars.
3.Linda wants a sandwich and juice. It’s 7.50 dollars.
4.Tina wants a hamburger and juice. It’s 4.50 dollars.
5.Sam wants a sandwich and juice. It’s 7.25 dollars.
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同类型试题
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
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y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
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