when I can't integrate. I managed to pull C+'s in calc 1, calc 2, and differential equations, basically by memorizing every integral known to man. well, now it's just impossible to do that because we're doing integrals of solids and 3D figures. and my first test is tomorrow. i know how to do basic integrals (x^n+1/n+1).. and i know that one rule.... uv - integral v du or whatever it's called. i just don't get u substitution, at all. i understand it when it's basic, like, if you have the integral of u du, i know what to do there... but, when you have to multiply by a fraction or whatever. i'm lost. i don't get it at all. i need a basic teaching of u substitution. please help.
I'm not really sure how i made it into multivariable calculus...?
i can do this sum but i was also wondering if you couild help me on some of the same things
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