4849数理金融简单数值题short
Infer Explicit Update Weight 9
题目
A finite-difference node uses u_new = u_old + lambda*(u_up - 2*u_old + u_down). The grid export shows u_old=7, u_up=8, u_down=6.2, and u_new=7.07. What lambda was used?
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提交作答时记录，用于后续平均用时统计。
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