The Chinese Abacus The abacus‚ a very important invention‚ was invented in Ancient China. We still use abacus but know it is known as a calculator. The abacus is a wooden frame with rows of wood along which beads are slid. One famous mathematician named Cheng Dawei in ancient China invented the Abacus. The abacus was invented around 2600BC by the Chinese. A typical abacus has 13 columns that are divided into two with each column having two beads on top and five at the bottom. The abacus was
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your calculator and the aluminum dynamics cart track. The Experiment: 1. Find the coefficient of static friction by slowly raising the incline plane until the block just begins to slide. Note the angle. Repeat 3 times and average to accurately find the angle of repose. 2. Determine a method in which the coefficient of kinetic friction can be determined. 3. Perform your experiment to determine the coefficient of kinetic friction for the rubber stoppers on your calculator cover
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1625ml | # | 20th May | 100ml | 200ml | 100ml | Refused | 400ml | 400ml | 1400ml | # | Total amount of fluid over 20 days = 21‚300mls Calculations for the total over 20 days * Mean 21300 = 1065mls 20 (This was checked with the use of a calculator) * Mode Using the chart above looking at the totals and using the below code you can see the mode is 1580. = appears more than once. *
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have stopped using our body and brain. Computers‚ calculators and internet are sources of great help but we have begun to depend totally on these inventions. For instance‚ even if we have to add a few numbers or do a small calculation we take out our calculator rather than use our brain. Our parents can still solve such problems in a jiffy without the aid of a calculator. We should try to solve our mathematical problems without using calculators this makes our mind sharp. Sitting on a chair for many
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because we had 7 numbers and we needed to find something in common about the 7 numbers. Since we are trying to find a commonality between 7 different numbers‚ we would have to start high‚ so I started at 100 and kept finding multiples of 2-7 on a calculator and recording it on paper‚ till I eventually hit 300. I noticed that 300 had 2-6 go into it evenly‚ and 7 went into 301 evenly. This means 2-6 go into 301 evenly with 1 left over‚ and
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Materials: Electronic calculator Tracing paper (optional) Geometrical instruments READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples‚ paper clips‚ glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. If working is needed for any question it must be shown below that question. Electronic calculators should be used.
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domain‚ you divide the total amount of material by the number of x’s. 180 is the total amount of material and there are 3 x’s. So divide 180 by 3. The answer is 60. So the domain is (0‚ 60). To find the dimensions that yield maximum area‚ on the calculator press the y= button and type in the final area equation we got‚ which is 180x – 3x^2. Then before you graph‚ you press the window button and enter the domain in the Xmin and Xmax slots. So it would look like Xmin = 0 and Xmax = 60. You just leave
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an = logmn mk ‚ then an = mn (Figure 2). Cancel out k the m‚ and we have the general expression n ‚ which is indeed in the form p . q Now‚ to make sure this expression worked‚ I tested by using it to find the following two terms. Using the calculator‚ I found that log64 8 = 1 . Using the expression 2 1 Fig. 1.— Using the TI Nspire
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phone‚ ipod‚ usb‚ cd‚ dvd‚ etc.Super fast computers are able to solve trillions of mathematical problems within a fraction of a second! Earlier‚ calculators were commonly used while nowadays‚ even complex calculation can be done with the help of computers. It takes instruction in the form of input and provide output results accordingly. While calculator gives response to the immediate input only‚ computer work with a set of instructions installed in it‚ so it constantly works‚ with amazing speed
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Chapter 1 Review Questions 2. What is the most important difference between a computer and a calculator? a. Computers contain a programmable microprocessor that understands data‚ which helps‚ make important decisions. A calculator can only be used to perform numerical mathematical calculations. 3. How are computers today similar to those from World War II? How are they different? a. The similarity between computers of WWII and today is that they computed large data and removed the human error factor
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