demand function的用法和樣例：
例句
- Thus, the quadratic indirect utility function is less attractive because the uncompensated demand functions are non-linear in the parameters.
因此，二次間接效用函數是那麼有吸引力，因為無償需求函數非直線在參數。 - The elasticity of demand with respect to each variable and the contribution of each factor to .the quantity of energy demanded were calculated.
根據估計的能源需求函數，計算了能源需求量對各影響因素的需求彈性以及各因素變動對能源需求量的貢獻率。
