Transcription of C4 Algebra - Partial fractions - Physics & Maths Tutor
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C4 Algebra - Partial fractions - Physics & Maths Tutor
C4 Algebra - Partial fractions C4 Partial fractions Questions 1. ( )( )212110522++ + + +xCxBAxxxx (a) Find the values of the constants A, B and C. (4) (b) Hence, or otherwise, expand ( )( )2110522+ +xxxx in ascending powers of x, as far as the term in x2. Give each coefficient as a simplified fraction. (7) (Total 11 marks) 2. 3112)3)(1)(12(2 4)f(+++++=+++=xCxBxAxxxxx (a) Find the values of the constants A, B and C. (4) (b) (i) Hence find .d )f(xx (3) (ii) Find 20d)f(xx in the form 1n k, where k is a constant.
C4 Algebra - Partial fractions . PhysicsAndMathsTutor.com. A = 2 1 2 3; B − = (No working seen, but A and B correctly stated ⇒ award all three marks.
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