ASM Example 8Bv Sol. 8.5

[mord]

Using Black - Scholes to value the call option on a stock with discrete dividends,

Example 8B (p99) doesn't discount teh strike price for the d1 formula, but Solution 8.5 does. What have I missed?

Thanks y'all

[Abraham Weishaus]

8B adds r which is equivalent to discounting.

[mord]

If they're equivalent, is there anything to suggest using one formula rather than teh other? don't you need the same information for both.

Thanks a lot,