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  • Terminology

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  • Definition of augmented matrix (of a linear system)
  • Definition of coefficient matrix of a linear system
  • Definition of constant vector of a linear system
  • Definition of solution vector of a linear system
  • Definition of matrix representation of a linear system
  • Definition of domain of a linear transformation
  • Definition of codomain of a linear transformation
  • Definition of image (of a point) under a linear transformation
  • Definition of pre-image (of a point) under a linear transformation
  • Definition of onto/surjective linear transformation
  • Definition of one-to-one/injective linear transformation
  • Definition of range of linear transformation
  • Definition of kernel of linear transformation
  • Definition of invertible linear transformation
  • Definition of inverse of a linear transformation
  • Non-example of a linear transformation
  • Definition of linear transformation/homomorphism
  • Definition of identity linear transformation
  • Definition of sum of linear transformations
  • The sum of linear transformations is a linear transformation
  • Definition of scalar multiple of a linear transformation
  • A scalar multiple of a linear transformation is a linear transformation
  • Definition of pre-image of linear transformation
  • Definition of range of a linear transformation
  • Definition of invertible/nonsingular linear transformation
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Description:Added scalar multiple definition
# Definition of scalar multiple of a linear transformation

Put content here**Definition:** If \(T: V 	o W\) is a linear transformation and \(c\) is a scalar, the *scalar multiple* \(cT\) is defined pointwise:
\[(cT)(\mathbf{v}) = c \cdot T(\mathbf{v}) \quad 	ext{for all } \mathbf{v} \in V\]
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The transformation \(cT\) scales every output of \(T\) by the factor \(c\).
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**Example:** If \(T(x,y) = (2x, 3y)\) and \(c = 5\), then \((5T)(x,y) = (10x, 15y)\).
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**Example:** If \(D\) is the derivative operator on polynomials, then \((3D)(p) = 3p'\).

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