Mathematics, 12.02.2021 14:00 Squara
Prove that if x and y are rational then their product is also rational. First write a proof on your own and then put the following statements into order to obtain the proof. Put N next to the statements that should not be used in the proof. 1. Then, xy=acbd . 2. Suppose x and y are arbitrary rational numbers. 3. Since a, c are integers, e=ac is also an integer.
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The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %
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