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I haven't had to do u substitution in ages, since Calc 1 (almost a year).
Calc 2 was more about the other advanced methods of integration, and infinite series.
I'm in Calc 3 now, and we're just doing some very basic stuff with vectors. Haven't even touched on integration/differentiation yet.. but I know when we get to it, I'm gonna be a bit rusty.
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I love lamp.
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