require(mxnet)


x = 1:3
mat = mx.nd.array(x)


mat = mat + 1.0
mat = mat + mat
mat = mat - 5
mat = 10 / mat
mat = 7 * mat
mat = 1 - mat + (2 * mat)/(mat + 0.5)
as.array(mat)

x = as.array(matrix(1:4, 2, 2))

mx.ctx.default(mx.cpu(1))
print(mx.ctx.default())
print(is.mx.context(mx.cpu()))
mat = mx.nd.array(x)
mat = (mat * 3 + 5) / 10
as.array(mat)