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Graph y=f-1(x) if the graph of y=f(x)= 2x +5 restricted in the domain {x | -2 <= x <= 1.5|}
a. What is the range of the function?
b. What is the domain and range of its inverse
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(a) The range of this function is from its lover level f(-2) = 2*(-2) + 5 = 1
to its upper level f(1.5) = 2*1.5 + 5 = 8, inclusive.
(b) The domain of its inverse is the same as the range of the direct function,
which we determined in (a): it is the interval [1,8].
The range of its inverse is the domain of the direct function,
which is given in the problem [-2,1.5].
Solved: all questions are answered.
