My Math Forum Inverse function

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 March 18th, 2017, 07:48 PM #1 Member   Joined: Mar 2017 From: Tasmania Posts: 36 Thanks: 2 Inverse function Question 2 a) Given the graph below, on the same set of axes draw the inverse of the function shown.(3 marks) https://gyazo.com/e740c5ec17079d649309de1c0ea29113 click the gyazo link to see diagram b) Is the inverse a function? Provide an explanation. (2 marks)
 March 18th, 2017, 07:58 PM #2 Senior Member     Joined: Sep 2015 From: USA Posts: 2,582 Thanks: 1427 in your function $[-2,0]$ all maps to the value 0. Functions that have inverses must be injective, i.e they must be one to one. The function shown has no inverse. Thanks from topsquark and Posher
 March 18th, 2017, 09:31 PM #3 Member   Joined: Mar 2017 From: Tasmania Posts: 36 Thanks: 2 romsek can you draw in a for me just so I can see I got it right
March 18th, 2017, 09:40 PM   #4
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Quote:
 Originally Posted by Posher romsek can you draw in a for me just so I can see I got it right
I don't understand what you are asking.

Draw in a ... what?

 March 18th, 2017, 09:48 PM #5 Member   Joined: Mar 2017 From: Tasmania Posts: 36 Thanks: 2 @romsek if you click the gyazo it shows you a graph and you need to draw the inverse of it
March 18th, 2017, 10:07 PM   #6
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 Originally Posted by Posher @romsek if you click the gyazo it shows you a graph and you need to draw the inverse of it
I told you it doesn't have an inverse.

 March 18th, 2017, 10:50 PM #7 Member   Joined: Mar 2017 From: Tasmania Posts: 36 Thanks: 2 yes but you are still required inverse even if it does not ie swap the value around to make another line
March 18th, 2017, 11:18 PM   #8
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 Originally Posted by Posher yes but you are still required inverse even if it does not ie swap the value around to make another line
well here

The inverse is not defined at $x=0$

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 March 18th, 2017, 11:55 PM #9 Member   Joined: Mar 2017 From: Tasmania Posts: 36 Thanks: 2 thanks romsek could you check out my physics question on the physics tab also I'll give you my thanks

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