作者mqazz1 (无法显示)
看板Math
标题[线代] 内积
时间Sun Feb 13 20:59:33 2011
let θ be a fixed real number
[ cosθ] [-sinθ]
x1 = [ sinθ] x2 = [ cosθ]
given a vectory y in R^2
find a,b such that y is a linear combination of ax1+bx2
请问这题要怎麽解呢?
谢谢
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1F：推 sm008150204 :inverse 一下阿 02/13 23:35