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The least square method cannot be used to solve the inconsistent linear equations. ( )

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Among the closed figures given by the perimeter, the figure with the largest area is ( ).

A. square
B. Equilateral triangle
C. Regular 17 polygon
D. .Circle

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When light travels from one point to another in any medium, it travels along the shortest path. This principle is called ( ).

A. Fermat’s principle
B. Bernoulli's theorem
C. Archimedes principle
D. Snell's law

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Through the variation method, the problem of functional extremum can be transformed into ( ).

A. Extremal problems of ordinary functions
B. The problem of finding the maximum value of function
C. The problem of finding the slope of function curve
D. The problem of finding the limit of function

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In the scientific calculation software Matlab, by default, the approximate value of π is 3.1416, so the error between the approximate value and the true value is that ( ).

Absolute error is 0.01
B. Absolute error is 0.1
C. Absolute error is 0.00001
D. Absolute error is 0.1%

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