1 + tan2θ = sec2θ cot2θ + 1 = cosec2θ = cosec2θ Sin2θ 2sinθcosθ Cos2θ cos²θ-sin²θ 2cos²θ-1 1-2sin²θ

All candidates must receive the same treatment. Examiners must mark the first candidate in exactly the same way as they mark the last.  Mark schemes should be applied positively. Candidates must be rewarded for what they have shown they can do rather than penalised for omissions.  Examiners should mark according to the mark scheme not according to their perception of where the grade boundaries may lie.

Use Fill in the boxes black ink or ball-point pen. at the top of this page with your name, •• centre number and candidate number. Answer Show your working in any calculation questions and include units in your answer all questions. • where appropriate. Answer the questions in the spaces provided – there may be more space than you need. Information •• The total mark for this paper is 80. The marks for each question are shown in brackets

Assessment Objective 1 (AO1): Knowledge and Understanding You will need to be able to: • Explain your knowledge and understanding of relevant political institutions and processes • Explain key political concepts, theories and debates. • Describe the context of certain events and arguments • Use relevant evidence and, where appropriate, contemporary examples to illustrate points made. Assessment Objective 2 (AO2): Analysis of Politics and Political Information You will need to be ...

Differentiate tan(kx) ksec^2(kx) Differentiate cos(kx) -ksin(kx) Differentiate sin(kx) kcos(kx) Arithmetic sequence Un = a + (n - 1)d

nswer all questions. • • • • • • Try to answer every question. • Instructions Use black ink or ball-point pen. Fill in the boxes at the top of this page with your name, centre number and candidate number. • Show your working in any calculation questions and include units in your answer where appropriate. Answer the questions in the spaces provided – there may be more space than you need.

If det M = 0 then M is a ... Singular matrix. What are the steps of inverting a 3 x 3 matrix? 1. Find the determinant of the matrix. 2. Form the matrix of the minors of the matrix. 3. Form the matrix of cofactors. 4. Write down the transpose, C^T, of the matrix of cofactors. 5. A^-1 = 1/detA x C^T If det M ≠ 0 then M is a ... Non-singular matrix. For a matrix to have an inverse it must be ... Non-singular

EDEXCEL CHEMISTRY 2021 A LEVEL PAPER 2 QP • Answer all • • •Please check the examination details below before entering your candidate information Candidate surnameOther names Pearson Edexcel Level 3 GCE Time 1 hour 45 minutes Chemistry Centre Number Candidate Number Paper referenc e 9CH0/ 02 Advanced PAPER 2: Advanced Organic and Physical Chemistry Total Marks Candidates must have: Scientific calculator Data Booklet Ruler Instructions • Use black ink or bl...

EDEXCEL CHEMISTRY 2021 A LEVEL PAPER 2 MS S - The Marketplace to Buy and Sell your Study Material Mark Scheme (Results) November 2021 Pearson Edexcel GCE In Chemistry (9CH0) Paper 2: Advanced Organic and Physical Chemistry S - The Marketplace to Buy and Sell your Study Material S - The Marketplace to Buy and Sell your Study Material Edexcel and BTEC Qualifications Edexcel and BTEC qualifications come from Pearson, the world’s leading learning company. We provide a wide range of qu...

EDEXCEL CHEMISTRY 2021 A LEVEL PAPER 1 MS S - The Marketplace to Buy and Sell your Study Material Mark Scheme (Results) November 2021 Pearson Edexcel GCE In Chemistry (9CH0) Paper 1: Advanced Inorganic and Physical Chemistry S - The Marketplace to Buy and Sell your Study Material S - The Marketplace to Buy and Sell your Study Material Edexcel and BTEC Qualifications Edexcel and BTEC qualifications come from Pearson, the world’s leading learning company. We provide a wide range of ...