How to create diagonal and unequal matrix in R? -

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i need create diagonal (6,6) matrix in r using valuse 1.2, 12.1, 6.5, 9.4, 4.9, 2.4. how should r code?

use diag:

diag(c(1.2, 12.1, 6.5, 9.4, 4.9, 2.4))

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