excel - Black Sholes formula -


i found black sholes option calculator.

as can see spreadsheet adjusted stock price given =s*exp(-q*t), how can use function in excel lookup value of q in spreasheet?

a = se^(-qt), a/s = e^(-qt) , s/a = e^(qt).

therefore, ln(s/a) = qt , ln(s/a)/t = q desired.

so formula should be

=ln(s/a)/t

where s, a, , t cell references values want compute value of q.


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