\( \DeclareMathOperator{cosec}{cosec} \)

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International Baccalaureate Mathematics

Calculus

Syllabus Content

Derivative of f(x)=axn is f'(x)=anxn-1, The derivative of functions of the form f(x)=axn+bxn-1+… where all exponents are integers

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Furthermore

Formula Booklet:

Derivative of \(x^n\)

\( f(x) = x^n \quad \Rightarrow \quad f'(x) = nx^{n-1} \)


The derivative of a function represents the rate of change of the function with respect to its independent variable. For functions of the form \( f(x) = ax^n + bx^{n-1} + \ldots \), where all exponents are integers and \( a, b, \ldots \) are constants, the derivative can be found using the power rule. The power rule states that the derivative of \( x^n \) is \( nx^{n-1} \). By applying this rule term-by-term, we can find the derivative of the entire function.

For example, consider the function: $$ f(x) = 3x^4 + 2x^3 - x^2 + 5x + 7 $$ The derivative of this function is: $$ f'(x) = 12x^3 + 6x^2 - 2x + 5 $$


This video on the Basics of Differentiation is from Revision Village and is aimed at students taking the IB Maths Standard level course


If you use a TI-Nspire GDC there are instructions useful for this topic.


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