Note: Remember that "exponential" means that these indicators give more weight to the latest data, making them more reactive to price changes (they react faster to recent price changes than simple moving averages)
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.