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Q.

Let f:R→R be such that f(x)=2x. Determine Range of f ____.


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Detailed Solution

Given the function  f(x)=2x and the value of this function is always real
Now for the range of the function f(x)=2x, since the value function has to always be a real value so we will substitute the values of x as positive real numbers since negative values will not give a real value.
So the range of the function for real values should be R+ or (0,∞)
Range of f is R+.
 
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Let f:R→R be such that f(x)=2x. Determine Range of f ____.