Using an appropriate substitution, find . Can anyone help me with this problem? Cheers x
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Originally Posted by Haris Using an appropriate substitution, find . Can anyone help me with this problem? Cheers x Make the substitution $\displaystyle z=5t-5\implies t=\tfrac{1}{5}(z+5)$. Thus, $\displaystyle \,dt=\tfrac{1}{5}\,dz$. The integral now becomes $\displaystyle \tfrac{1}{25}\int-(z+5)z^5\,dz=-\tfrac{1}{25}\int(z^6+5z^5)\,dz$ Can you take it from here? --Chris
I got $\displaystyle -1/25[(1/7)z^7+(5/6)z^6+C]$ but it must be wrong because i entered the answer into my online assessment and it says its wrong?
Originally Posted by Haris I got $\displaystyle -1/25[(1/7)z^7+(5/6)z^6+C]$ but it must be wrong because i entered the answer into my online assessment and it says its wrong? You have to replace back what z is ......!
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