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The bisection method starts with an element $a_1$ in the set $M$ and an upper bound $b_1$. It iteratively calculates the midpoint $c_n = \frac{1}{2}(a_n + b_n)$.

Conditions: $M$ is a non-empty subset of $\mathbb{R}$.; $M$ is bounded from above.; $a_1 \in M$ and $b_1$ is an upper bound for $M$.

The bisection method starts with an element $a_1$ in the set $M$ and an upper bound $b_1$. It iteratively calculates the midpoint $c_n = \frac{1}{2}(a_n + b_n)$.

Conditions: $M$ is a non-empty subset of $\mathbb{R}$.; $M$ is bounded from above.; $a_1 \in M$ and $b_1$ is an upper bound for $M$.