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Algebra Revisited
What Are Real Functions and Graphs?
Definition of Range (Image)
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The range of a function is the smallest set that contains all values it can attain over its domain. The range of f(x)=1xf(x)=\frac{1}{x}f(x)=x1 is not the set of all real numbe…
By Mingfei Duan
Problems
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What is the range of f(x)=x2+1f(x)=x^2+1f(x)=x2+1?
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