Create a 10×3 array A where the first column are the x values 1 through 10, the second column are the y values where y(x) = sqrt(x) and the third column are the z values where z = x^2. Write the values of A to file A.dat, one row per line. Generate a 7×11 matrix R of random values (uniform on [0,1]), and write this matrix to file ranm.dat.

 x = [1:10]
 A[1:10,1] = x
 A[1:10,2] = sqrt(x)
 A[1:10,3] = x^2
 write\matrix 'A.dat' A
 R = fold(ran([1:77]),7)
 write\matrix 'ranm.dat' R
 

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