Suppose Evaluate the following (b) Im still feeling a little lost...I'm not sure on when to change the limits, and if du= -dt do i inverse the u? Thanks for all the help!
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Originally Posted by gabet16941 Suppose Evaluate the following (b) Im still feeling a little lost...I'm not sure on when to change the limits, and if du= -dt do i inverse the u? Thanks for all the help! Let $\displaystyle u = 6 - t$ $\displaystyle \Rightarrow du = -dt \implies -du = dt$ change the limits: $\displaystyle t = 6 \implies u = 0$ $\displaystyle t = 0 \implies u = 6$ so our integral becomes: $\displaystyle - \int_6^0 g(u)~du = \int_0^6 g(u)~du = 6$
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