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3.7 Integration (A-level only)

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Question 4
a.

Express 4x+5(x+2)(2x+1)\displaystyle \frac{4x + 5}{(x + 2)(2x + 1)}(x+2)(2x+1)4x+5​ in partial fractions

[3]
b.

Given that x>0x > 0x>0, find the general solution to the differential equation

(x+2)(2x+1)dydx=y(4x+5) (x + 2)(2x + 1) \frac{dy}{dx} = y(4x + 5) (x+2)(2x+1)dxdy​=y(4x+5)
[5]
c.

Hence find the particular solution to the differential equation that satisfies y=24y = 24y=24 at x=1x = 1x=1, giving your answer in the form y=f(x)y = f(x)y=f(x)

[4]
Markscheme

3.7 Integration (A-level only) Questions

  1. A Level
  2. /Maths
  3. /3.7 Integration (A-level only)

221 exam-style questions on WJEC A Level Maths 3.7 Integration (A-level only), covering 3.7.1 Integration (A-level only), 3.7.2 Integration (A-level only), 3.7.3 Integration (A-level only), 3.7.4 Integration (A-level only), 3.7.5 Integration (A-level only), and 3.7.6 Integration (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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