The integration proof that the area of a disc is = pi r squared came up in 2011. It is difficult but since it came up in 2011 I would be surprised to see it come up again so soon. Below is the requested explanation.
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Requested solution SEC 2011 Q1 - not sure if Paper 1 or 2 is required so I have linked below.  To explain the answer another way:
Once you have worked out that we want the probability between z=-1.2 and 1.2. We then look up 1.2 in the z-tables and see it is = 0.8849 (or 88.49%). Now consider the normal curve diagram: z = 0 is a probability of 50%. Between 0 and 1.2 is 50% to 88.49% which is a difference of 38.49%. By symmetry there is also the same probability between z = -1.2 and 0. So the probability between -1.2 and 1.2 is 2(38.49%) = 76.98%. Requested solution explanation:  Explanation:
If Max then f''(x1) < 0, if Min f''(x1) > 0. Differentiating -2xe^(-x^2) involves using the Product Rule letting u = -2x and v = e^(-x^2). Requested solutions to the Calculus Questions Q8 and Q9 SEC 2011.
Question 8 Question 9 Sorry about the delay the first request form slipped my attention. (Blog comment requests are easier for me to spot than contact form requests) If anyone would like help tomorrow my timetable is free - just request a time (use the comment space in this blog) and I'll make myself available. Just to remind you that there are a number of proofs on the course that do need to be learned off. These included in Differentiation - the general rule, the product rule and the quotient rule. All required proofs are linked below:
Hope the study is going well.  Sir I cant find the Question in our papers but could you you put up a solution to Edco Sample Paper D Paper 1 from the Other Papers .Its as follows : 2x+3 e __________ Diferrenticate 2x e. I don't have these papers at home and I'm not sure if I'm understanding the question right? Let me know. 
Some students have asked to go over Differentiation ... I will be giving a class starting at 9am this Monday (am free till the afternoon). All welcome.
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AuthorMr R. 
CategoriesArchives
August 2013
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