do u know how to solve this : u'' + 1/r u' = 0 (i forgot the method and i don't have my notebook)
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Originally Posted by tom007 do u know how to solve this : u'' + 1/r u' = 0 (i forgot the method and i don't have my notebook) This is a Cauchy-Euler equation. Multiply through by , to get . Now, go to Chris' differential equations tutorial (link in my signature) and see post #5
Originally Posted by tom007 do u know how to solve this : u'' + 1/r u' = 0 (i forgot the method and i don't have my notebook) Multiply by
Originally Posted by DeMath Multiply by even better!
Originally Posted by DeMath Multiply by yeea..now i remember!!! tnx!!!
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