The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

Transformations Hep

Describe the sequence of transformations which maps
y=1/x^2to y= 2/(x+3)^2
translation (-3 0) on the axis stretch parallel to the y axis by a scale factor of 2
im not sure
(edited 5 years ago)
Reply 1
Avatar for mqb2766
mqb2766
21
Original post by jsb00
Describe the sequence of transformations which maps
y=1/x^2to y= 2/(x+3)^2
translation (-3 0) on the axis stretch parallel to the y axis by a scale factor of 2
im not sure


Yes, although it would probably be slightly better to say an x-translation or shift by -3 and a (vertical) scaling by 2.
Original function
y = f(x)
Modified function
y = 2*f(x+3)
what level of study is this? a level maths or fm?
Reply 3
Avatar for jsb00
jsb00
OP
12
Original post by Gent2324
what level of study is this? a level maths or fm?

a level maths
Original post by jsb00
a level maths


are you doing edexcel? if so what topic and chapter?
Reply 5
Avatar for jsb00
jsb00
OP
12
Original post by Gent2324
are you doing edexcel? if so what topic and chapter?


yep I'm with edexcel
but this isn't from the book
we get these questions set by teachers
Original post by jsb00
yep I'm with edexcel
but this isn't from the book
we get these questions set by teachers


yes but what like chapter is this in the textbook where you learn about it, are you in year 2?
Reply 7
Avatar for jsb00
jsb00
OP
12
Original post by Gent2324
yes but what like chapter is this in the textbook where you learn about it, are you in year 2?

Chapter 17 Alegbra and Fractions
Yeah im in Y2
Reply 8
Avatar for jsb00
jsb00
OP
12
Original post by mqb2766
Yes, although it would probably be slightly better to say an x-translation or shift by -3 and a (vertical) scaling by 2.
Original function
y = f(x)
Modified function
y = 2*f(x+3)

Can you help me with this plz
f(x) = 3x-1
Find the values of x for which
f^-1 (x) = 5/f(x)
if 5/3x-1
0 = 5/3x-1
3x-1=5
6=3x
x=2
Is this right?
Reply 9
Avatar for mqb2766
mqb2766
21
Original post by jsb00
Can you help me with this plz
f(x) = 3x-1
Find the values of x for which
f^-1 (x) = 5/f(x)
if 5/3x-1
0 = 5/3x-1
3x-1=5
6=3x
x=2
Is this right?

When
y = f(x) = 3x-1
* You find the inverse by finding x in tems of y.
* Then substitute y for x to get f^(-1)(x).
* Then equate to 5/f(x) and solve.
I don't think this is what you did?

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you