Vector products: Difference between revisions
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The popular [http://numpy.scipy.org/ numpy] package has functions for dot and cross products. |
The popular [http://numpy.scipy.org/ numpy] package has functions for dot and cross products. |
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=={{header|R}}== |
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<lang r>a <- c( 3.0, 4.0, 5.0) |
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b <- c( 4.0, 3.0, 5.0) |
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cross <- function(a, b) |
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c(a[2]*b[3] - a[3]*b[2], |
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a[3]*b[1] - a[1]*b[3], |
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a[1]*b[2] - a[2]*b[1]) |
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cross(a, b) |
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# [1] 5 5 -7</lang> |
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=={{header|Ruby}}== |
=={{header|Ruby}}== |
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