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ConstantArray—Wolfram Language Documentation

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• See Also
  • Array
  • Table
  • Range
  • SparseArray
  • IdentityMatrix
  • UnitVector
  • ConstantImage
  • ArrayFlatten
  • StringRepeat
  • SymbolicZerosArray
  • SymbolicOnesArray
• Related Guides
  • Constructing Matrices
  • Constructing Lists
  • Operations on Vectors
  • Structure Matrices & Convolution Kernels
  • Creating & Importing Signals

ConstantArray[c,n]

generates a list of n copies of the element c.

ConstantArray[c,{n₁,n₂,…}]

generates an array of nested lists containing copies of the element c.

Make a vector of 10 c's:

Make a 3×4 array of c's:

Make an array out of blocks:

A machine-zero vector:

A vector of exact zeros:

A machine-zero matrix:

A matrix of exact zeros:

A vector of ones:

A machine-number vector of ones:

A deeply nested constant array:

Set up an array to use as storage in a program:

Numerically solve x'[t]==1/(t+x[t]^2) using Euler's method:

Find the sum of the elements in a list:

This can also be done with Total:

Use a vector of ones to see the effects of conditioning on the solution of a linear system:

The solution at machine precision has significant errors:

At higher precision, the solution is much better:

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