Pre-U: Which method you like to Integrate sinx cos^3x? Substitution method or just using formula?

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This is pre university question for integrate trigonometry.

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其实formula的konsep是来自sub 没有对错 只是一个快一个慢罢了 so 没差

kingang
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personally, formula method is easier and faster for me (if can easily see the identity lah) and for subs. method if the question very long then it's going to be very difficult coz u going to sub and who knows inside the sub need sub another time 😗

boneetoflakes