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Mathematics 14 Online
OpenStudy (anonymous):

find the coordinate vector of w relative to the basis S ={ui,u2} for R2; u1 = (2,-4); u2=(3,8);w=(1,1). Please,help

OpenStudy (turingtest):

you want to find scalars a and b such that w=a(u1)+b(u2)

OpenStudy (anonymous):

yes. I know how to apply but i don't know what is wrong with my work when i work with my matrix.|dw:1361480384600:dw|. my answer is always wrong. the book is (5/28,3/14) when checking with those scalar, it 's perfect, but i don't know how to get there with my matrix

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