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Power of x
𝑑𝑑𝑥(𝑐)=0𝑑𝑑𝑥(𝑐𝑥)=𝑐𝑑𝑑𝑥(𝑐𝑥𝑛)=𝑛𝑐𝑥𝑛−1
For example, 𝑑𝑑𝑥5𝑥3=3⋅5𝑥2=15𝑥2
You'll also want to remember that 1𝑥𝑛=𝑥−𝑛 (for example, 1𝑥2=𝑥−2), and 𝑛√𝑥=𝑥1/𝑛 (example: 3√𝑥=𝑥1/3).