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Which differentiation rule does integration by substitution reverse?
A
x2e2x−14e2x+C\displaystyle \frac{x}{2}e^{2x}-\frac14e^{2x}+C2xe2x−41e2x+C
B
The chain rule.
C
Choose u=xu=xu=x.
D
For a nonzero function fff, ∫f′(x)f(x) dx\displaystyle \int \frac{f'(x)}{f(x)}\,dx∫f(x)f′(x)dx === ln∣f(x)∣+C\boxed{\ln|f(x)|+C}ln∣f(x)∣+C.
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3.7.4 Integration (A-level only) Flashcards
21 flashcards on WJEC A Level Maths 3.7.4 Integration (A-level only): the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4.