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我想乘一些矩陣和以下錯誤發生時:誤差乘以矩陣
B <- 2*mcov
B <- cbind(B,c(1,1,1,1,1,1,1,1,1,1,1,1,1,1,1))
B <- cbind(B,t(mrend))
B <- rbind(B, c(1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0))
B <- rbind(B, ((1 + c(meanNovartis, meanRDS, meanRoche, meanEJ, meanHSBC,
meanBayer, meanUnilever, meanGSK, meanSanofi, meanAnheuser,
meanSiemens, meanLoreal, meanInnate,
meanBT,meanNestle,0,0)^12)-1))
B
c <- matrix(c(0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,(((1+mean(meanRDS))^12))-1),
nrow=17, ncol=1)
,並試圖解決在:
x <- solve(B)%*%c
出現此錯誤:
solve.default(B)中的錯誤:Lapack例程dgesv:系統恰好是單數:U [17,17] = 0
您的問題已經回答[這裏](http://stackoverflow.com/questions/6572119/r-solvesystem-is-exactly-singular) –