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Compact Scientific Calculator 45 for scientists, engineers, teachers, and students. The calculator was designed with purpose to fit Netbooks and Notebooks with small display. Of course, the calculator can be used on laptop and desktop computers. This calculator follows classical approach when uncertainty of f(x) calculation is estimated by formula max|(derivative(f))|*|x*uncertainty(x)|, where maximum of function derivative is considered on interval [x-uncertainty(x), x+uncertainty(x)]. Thus sin(2*pi)=0+-1E-54 and sin(2*1E20*pi)=0+-1E-34. As we see, the resultís accuracy degrades with growth of argument, but such approach allows to preserve all trigonometry facts like sin(even number*pi+x)=sin(x). In the default mixed mode the calculator treats numbers as integers wherever it is possible. For example, 43! have an integer result with 53 digits. There are 10 variables (or constants) available for storing frequently used numbers. All calculation results are reflected in History rich-text-box, which can be saved in file or printed.

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