The curve C C\,C has the parametric equations
x=ln(t+5)y=1t+4t>−4 x = \ln(t+5) \quad y = \frac{1}{t+4} \quad t > -4 x=ln(t+5)y=t+41t>−4The finite region R R\,R between the curve C C\,C and the x x\,x axis is bounded by the lines with equations x=ln5x = \ln 5x=ln5 and x=ln10x = \ln 10x=ln10.
Show that the area of R R\,R is given by the integral ∫051(t+4)(t+5) dt\displaystyle \int_0^5 \frac{1}{(t+4)(t+5)} \, dt∫05(t+4)(t+5)1dt
Hence find an exact value for this area.
Practise AQA A Level Maths 1.11 H: Integration with exam-style questions for A Level Maths. 436 questions covering 1.11.1 Fundamental Theorem of Calculus, 1.11.2 Integrating standard functions, 1.11.3 Definite integrals and areas, 1.11.4 Integration as the limit of a sum (A-level only), 1.11.5 Integration by substitution and by parts (A-level only), 1.11.6 Integration using partial fractions (A-level only), 1.11.7 Differential equations with separable variables (A-level only), and 1.11.8 Interpreting solutions of differential equations (A-level only), matched to the AQA A Level Maths (7357) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
