Advantages and Disadvantages of Calculator
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Answers:advantage: being able to use the calculator whenever you want without having to worry about the battery life. Disadvantage: When u really need it, it won't work because there is no light.
Answers:advantages: accurate and reduces the work that you have to do disadvantages: the main disadvantage is that it can make you 'lazy' with simple mental arithmetic and can reduce your ability in this area.
Answers:The advantage is that it can be done mechanically, with no insight or intelligence of any sort, it can be used to find (approximate) solutions for any equation, no matter how complicated (given that even something as simple as a quintic polynomial cannot always have its solutions expressed using a finite number of field operations and root extractions, approximate solutions are sometimes the best you can do), and if being used to check solutions, minimizes the chance of arithmetical error in the verification. It can also be used to assist in the visualization of a function (although cannot replace it, since somtimes a function has irregularities on a scale smaller than the pixels of the graph window). The disadvantages are that since the graphing calculator works numerically rather than symbolically, it sometimes accumulates serious numerical errors from rounding (compare http://img206.imageshack.us/img206/1730/graph1nv6.png with http://img205.imageshack.us/img205/7366/graph2gw6.png -- these two should be the same polynomial, but the second doesn't look like a polynomial at all because of numerical instability in the calculation). Also, it can give misleading solutions (do not EVER try to find the limit of a function using a calculator unless you know before you enter the function what the graph looks like -- I've seen too many students get burned because the behavior of a function changes just outside their graph window, or on a scale too small to see), and frequently can only verify that a solution is correct to within some numerical error -- a verification that the solution is actually exactly correct requires symbolic manipulation. Finally, attempting to use the graphing calculator constantly will lead to the atrophy of symbolic manipulation skills, typically rendering it inappropriate for use in a math class, whose purpose is to develop those skills. This is not to say that the calculator should never be used in math class, but if the students are using it to do mathematics rather than computation, they invariably end up failing in later courses where success is impossible without actual understanding (taken any analysis courses lately?).
Answers:Science and technology go hand in hand. You could very easily argue that in the whole scheme of things, technology has no disadvantages in advancing science. Technology like the telescope allowed for astronomy to be born, and the microscope in biology. In a way, science (particularly modern science) cannot exist without technology of some kind. If you mean to say information technology or electronic technology, the advantages are clear. Radiology and understanding what's going on inside the body can only be done with x-ray or computerized tomography imaging - all highly dependent on technology. Mapping the Human Genome has been suggested to be entirely a technology problem, but now that we know what the Human Genome is made of, we can perform more scientific research on it. This is a clear example of how technology enables science. Disadvantages are much harder to identify, but one might be a growing dependence on technology, like kids not learning basic math because calculators exist, or that modeling how organisms live on a computer is not a good approximation of what's going on in the real world and could lead to poor-quality science.