Are the functions f(x) and g(x) inverse of one another?
1 answer:
<h2>Answer:</h2><h2></h2><h3>No!</h3><h2></h2><h2>Explanation:</h2><h2></h2>
The function doesn't have inverse because it doesn't pass the horizontal line test. This test tells us that a function
has an inverse function<em> if and only if</em> there is no any horizontal line that intersects the graph of
at more than one point. As you can see, from the graph of f (the red one), if you draw an horizontal line that passes through
then this line will touch the graph of f at three points, so the horizontal line test is not satisfied here. If you see the graph of g, this doesn't represent a function because there is at least one vertical line that touches the graph at more than one point, so this relation is not a function.
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Here speed of first train is slower than speed of second train. So if they catch up , the distance traveled will be same since they left the same station at different times.
But the time traveled will be different .
Let us say the two trains meet at time t ,
Distance = speed * time
Distance traveled by first train = 40 t
Since second train is leaving after three hours , so
Distance traveled by second train = 60(t-3)
As discussed earlier, distance traveled will be same, so
distributing 60 over t-3
t=9
So the second train will meet the first at 9 p.m.
