Show that f(x) = x^2 - 2x (x is (negative infinity, 1) is 1:1 and find its inverse. How should I approach this question? what should I do?
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Originally Posted by ziyadbasheer Show that f(x) = x^2 - 2x (x is (negative infinity, 1) is 1:1 and find its inverse. How should I approach this question? what should I do? . So the turning point is at . Since the function is cut off at , that means you don't have any repeating values. Therefore is one-to-one. Now, to find the inverse, swap the and ... (since we are only accepting the lower half) . So .
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