Rudy used the addition property of equality or also called as property of equality. It enable Rudy to add a the same number in both sides of equation to be able to give him an equivalent equation. It is the most use properties in solving equations.
Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =
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