The default settings of MACD is 12-26-9 in which 12 is the fast ema 26 is slow ema and 9 is the signal line. If i want to select 25 as fast ema and 60 as slow ema then what should i select as signal line. Should i keep 9 or have to change my default signal parameter. I know we can keep any parameter as signal line but would like to know whether is their any rationally to select signal line?
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