That is expected utility theory. Then I'll conclude with this.

这是期望效用理论。

The owner maximizes his expected utility under the two constraints.

企业主在两个约束下最大化其预期效用。

Expected utility is calculated by multiplying the probability of each payoff by the payoff and taking the total sum.

预期效用的计算方法是用每次支付分值的概率乘以支付的分值，然后对其进行累加。

The existence theorem of expected utility function was the most important conclusion in expected utility theory.

期望效用函数存在定理是期望效用理论中最重要的定理。

Under the condition that the fixed consumption can be guaranteed, we tries to maximize expected utility from final wealth.

投资者的目的是：在保证固定消费正常进行的条件下，使最终财富的期望效用最大。