What is the derivative or gradient function?

• For a curve?y?=?f(x)?there is an associated function called the?derivative?or?gradient function
• The derivative of f(x) is written as f'(x) or
• The derivative is a formula that can be used to find the gradient of y = f(x) at any point, by substituting the x coordinate of the point into the formula
• The process of finding the derivative of a function is called differentiation
• We differentiate a function to find its derivative

What is differentiation from first principles?

• Differentiation from?first principles?uses the?definition?of the?derivative?of a function?f(x)

• The definition is

How do I differentiate from first principles?

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