Techniques of Integration - Integration by the Reverse Chain Rule

Techniques of Integration - Integration by the Reverse Chain Rule

IB Year 6 | Grade 12

Algebraic functions

In the table below, \(A, B\) and \(n\) are constants, and \(\mathrm{f}\) is a function; \(C\) is an arbitrary constant.

Algebraic Functions: power of variable, and of a function
DifferentiationIntegration
\[\frac{\mathrm{d}}{\mathrm{d}x}(x^{n+1})=(n+1)x^n\]\[\displaystyle \displaystyle\int x^n \, \mathrm{d}x = \frac{x^{n+1}}{n+1} + C, \text{ where}\hspace{0.5em} n \neq -1\]
\[\frac{\mathrm{d}}{\mathrm{d}x}(Ax+B)^{n+1}=A(n+1)(Ax+B)^n\]\[\displaystyle \displaystyle\int (Ax+B)^n \, \mathrm{d}x = \frac{(Ax+B)^{n+1}}{A(n+1)} + C, \text{ where}\hspace{0.5em} n \neq -1\]
\[\frac{\mathrm{d}}{\mathrm{d}x}[\mathrm{f}(x)]^{n+1}=(n+1)[\mathrm{f}(x)]^n[\mathrm{f}'(x)]\]\[\displaystyle \displaystyle\int [\mathrm{f}(x)]^n[\mathrm{f}'(x)] \, \mathrm{d}x = \frac{[\mathrm{f}(x)]^{n+1}}{n+1} + C, \text{ where}\hspace{0.5em} n \neq -1\]

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