Case study Chapter 10( Vector ) Case study 1: A man is watching an aeroplane which is at the co-ordinate point A(4, -1, 3) assuming that the man is at O(0, 0, 0). At the same time he saw a bird at the coordinate point B(2, 0, 4).(Case study problem vector 2) Based on the … Read more
Case study Chapter 10 (Vectors) Solar panels have to be installed carefully so that the tilt of the roof, and the direction to the sun , produce the largest possible electrical power in the solar panals.(Case study problem vector 1) A surveyor uses his instrument to determine the co-ordinates of the four corners of a … Read more
Case study Chapter 11(Three dimension geometry) A line through the points A(3, 4, 1) and B(5, 1, 6) is drawn.(Case study three dimension geometry 2 ) Based on the above information answer the following questions: (i) Direction cosines of the line passing through the points A and B are (a) (b) (c) (d) (ii) Direction … Read more
Case study Chapter 11 (Three dimension geometry) The equation of motion of a missile are x = 3t, y = -4t, z = t where the time ‘t’ is given in seconds, and the distance is measured in kilometres.(Case study three dimension geometry 1) (i) What is the path of the missile ? (a) Straight … Read more
Case study Chapter 12 (Linear programming) Aeroplane is an important invention for three reasons.It shortens travel time, is more comfortable and facilitates the transport of heavy cargo.(Case study linear programming 5 ) An aeroplane can carry a maximum of 200 passengers. A profit of ₹ 400 is made on each executive class ticket and profit … Read more
Case study Chapter 12 (Linear programming) A share is refferred to as a unit of owner ship which represents an equal proportion of a company’s capital. A share entities the shareholders to an equal claim on profit and loss of company. Dr. Ritam wants to invest at most ₹ 12,000 in two type of shares … Read more
Case study chapter 12(Linear programming) A bakery in an establishment produces and sells flour-based food baked in an oven such as bread, cakes, pastries, etc. Ujjwal cake store makes two types of cake. First kind of cake requires 200 g of flour and 25 g of fat and 2nd type of cake requires 100 g … Read more
Case Study Chapter 12(Linear programming) A dealer Ramprakash residing in a rural area open a shop to start his bussiness. He wishes to purchase a number of ceiling fans and table fans. A ceiling fan costs him ₹ 360 and table fan costs ₹ 240. Based on the above information answer the question(Case study linear … Read more
Case study chapter 12 (Linear programming) Owner of a whole sale computer shop plans to sell two type of computers – a desktop and portable model that will cost ₹ 25000 and ₹ 40000 respectively.(Case study linear programming 1 chapter 12 class 12) Based on the above information answer the question (i) If the number … Read more
Case study Chapter 13(Probability) In answering a question on a multiple choice test for class XII, a student either knows the answer or guesses. Let 3/5 be the probability that he knows the answer and 2/5 be the probability that he guesses. Assume that a student who guesses at the … Read more