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Solve the product of difference of squares $\left(2+\sqrt{y}\right)\left(2-\sqrt{y}\right)$
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$derivdef\left(4-y\right)$
Learn how to solve definition of derivative problems step by step online. Find the derivative of (2+y^1/2)(2-y^1/2) using the definition. Solve the product of difference of squares \left(2+\sqrt{y}\right)\left(2-\sqrt{y}\right). Find the derivative of 4-y using the definition. Apply the definition of the derivative: \displaystyle f'(x)=\lim_{h\to0}\frac{f(x+h)-f(x)}{h}. The function f(x) is the function we want to differentiate, which is 4-y. Substituting f(x+h) and f(x) on the limit, we get. Multiply the single term -1 by each term of the polynomial \left(y+h\right). Multiply the single term -1 by each term of the polynomial \left(4-y\right).