Theorem 1: optimal durations are extreme, qualities are $(\alpha_i+t_i^*b_i)/(2c_i)$, markups equal $1+r^*$, and $r^*$ is the optimal profit

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Theorem 1: optimal durations are extreme, qualities are $(\alpha_i+t_i^*b_i)/(2c_i)$, markups equal $1+r^*$, and $r^*$ is the optimal profit · Prove2Me