The symbols of and are called differentiation

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The symbols of 𝐷 and 𝑑 𝑑𝑥 are called differentiation operators because they indicate the operation of differentiation . 𝑑? 𝑑? = ← the letter on top is the name of the function being differentiated. ← the letter on the bottom is the variable being differentiated with "respect to" . For higher order derivatives we add the notation in the following way 𝑑 2 ? 𝑑? 2 𝑑 3 ? 𝑑? 3 …. Usually it is easier here to use prime notation. Extra information about higher order derivatives with Leibniz notation. Note that 𝑑 2 ? 𝑑? 2 ≠ ( 𝑑? 𝑑? ) 2 If we want to indicate the value of the derivative in Leibniz notation at a specific number ? , we use the notation. 𝑑? 𝑑? | 𝑥=𝑎 𝑜𝑟 𝑑? 𝑑? ] 𝑥=𝑎 Prime notation Leibniz notation