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core 3 transformation just checking

What transformation describes 0.5f(x+1)

The mark scheme says Translate 1 to the left and then a Y stretch of 0.5

Is this the same as Y stretch of 0.5 then translate 1 the left?
Original post by pheekum
What transformation describes 0.5f(x+1)

The mark scheme says Translate 1 to the left and then a Y stretch of 0.5

Is this the same as Y stretch of 0.5 then translate 1 the left?


Yes.
Original post by pheekum
What transformation describes 0.5f(x+1)

The mark scheme says Translate 1 to the left and then a Y stretch of 0.5

Is this the same as Y stretch of 0.5 then translate 1 the left?


Yes because one affects Y values and the other one X values only so the order does not matter..but if it was 0.5f(x)+3 then the order would matter.
Reply 3
Avatar for poopnoddy
poopnoddy
2
Yeah


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Reply 4
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Ronove
18
Original post by hassassin04
Yes because one affects Y values and the other one X values only so the order does not matter..but if it was 0.5f(x)+3 then the order would matter.

In that case would you do the stretch then the translation? Just realised I don't actually know. :redface:
Original post by Ronove
In that case would you do the stretch then the translation? Just realised I don't actually know. :redface:


Yes.
Original post by Ronove
In that case would you do the stretch then the translation? Just realised I don't actually know. :redface:


Yes, however, if it is f(2x+6) then you translate first then multiply by 1/2 scale factor. Or you pull 2 out getting f(2(x+3) ) , multiply then stretch.
Reply 7
Avatar for pheekum
pheekum
OP
2
Original post by hassassin04
Yes, however, if it is f(2x+6) then you translate first then multiply by 1/2 scale factor. Or you pull 2 out getting f(2(x+3) ) , multiply then stretch.


Thanks this one helped me alot

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