鸡蛋 | 黄豆 | 花生 | 肌肉 | 带鱼 | |
蛋白质 | 12.8% | 35.1% | 12.1% | 19.3% | 17.7% |
脂肪 | 11.1% | 16.0% | 25.4% | 9.4% | 4.9% |
(2)如果x克黄豆中含有蛋白质175.5克,那么求黄豆的质量可列方程为:
同类型试题
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
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