Mathematics · Linear Algebra
Which of the following functions T: ℝ → ℝ defines a linear transformation?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1T(x) = √x
- 2T(x) = x2
- 3T(x) = 4x✓
- 4T(x) = x - 4
Correct answer
T(x) = 4x
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