The yield efficiency of a thermal generator, E(τ)E(\tau)E(τ), is given by the function
E(τ)=42τ2−17τ+156τ−5 E(\tau) = \frac{42\tau^2 - 17\tau + 15}{6\tau - 5} E(τ)=6τ−542τ2−17τ+15where τ>1\tau > 1τ>1 is the operating temperature factor. This expression can be rewritten in the form Aτ+B+C6τ−5A\tau + B + \frac{C}{6\tau - 5}Aτ+B+6τ−5C.
State the value of AAA.
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671542 6 \quad\quad 7 \quad\quad 15 \quad\quad 42 671542306 exam-style questions on CCEA A Level Maths 1.1 Algebra and functions, covering 1.1.1 Algebra and functions, 1.1.2 Algebra and functions, 1.1.3 Algebra and functions, 1.1.4 Algebra and functions, 1.1.5 Algebra and functions, 1.1.6 Algebra and functions, 1.1.7 Algebra and functions, 1.1.8 Algebra and functions, 1.1.9 Algebra and functions, 1.1.10 Algebra and functions, 1.1.11 Algebra and functions, 1.1.12 Algebra and functions, 1.1.13 Algebra and functions, and 1.1.14 Algebra and functions. Each one has a worked solution and a mark scheme showing where the marks go.