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November 08, 2025, 05:28:48 am
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Author Topic: Neap 2010 exam 1 question  (Read 521 times)  Share 

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Elnino_Gerrard

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Neap 2010 exam 1 question
« on: November 03, 2010, 08:06:02 pm »
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Question 3c where it says f^-1(f(x) can someone explain please how they got the rule?
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2010 VCE ATAR : 98.35

Souljette_93

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Re: Neap 2010 exam 1 question
« Reply #1 on: November 03, 2010, 08:44:52 pm »
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Quote from: Elnino_Gerrard on November 03, 2010, 08:06:02 pm
Question 3c where it says f^-1(f(x) can someone explain please how they got the rule?

They have just given you a function ( composite) and when you simplify it it should give you   watch out for domain though.
« Last Edit: November 03, 2010, 08:46:41 pm by Souljette_93 »
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Elnino_Gerrard

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Re: Neap 2010 exam 1 question
« Reply #2 on: November 03, 2010, 08:54:45 pm »
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no thats the thing u have negative  Square root of (x-2)^2 +2
Now how do i know whether i take the negative or positive root of (x-2)2
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sajib_mostofa

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Re: Neap 2010 exam 1 question
« Reply #3 on: November 03, 2010, 09:11:18 pm »
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Has anyone noticed there are a number of wrong answers in the solutions? e.g for Q9C, it says "A dilation of factor 2 from the y-axis and a reflection in the y-axis", when it should be a reflection in the x-axis.
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