Simple translation vector question

chilli17

Can you tell me your answers for these questions, am sure book answers are wrong

Reply 1

chilli17

Book answers are 9, 5, 1, 13, 15, 3.5

Reply 2

RDKGames

Study Forum Helper

Original post by chilli17

Book answers are 9, 5, 1, 13, 15, 3.5

How about you have a go, show us what your work, then explain why you're sure the book's answers are wrong?

Reply 3

chilli17

Don't you just add the vector numbers on to x, y coordinates.?

Reply 4

RDKGames

Study Forum Helper

Original post by chilli17

Don't you just add the vector numbers on to x, y coordinates.?

No.

For no. 3 for example, the translation vector is [2,0] which means

y=f(x) \mapsto y=f(x-2)

Plugging

x=3

then gives

y=f(1)=1

Reply 5

chilli17

OK getting there correct answers now

Using the formula y - s = f(x - t) [t/s]

Is there a YouTube video with this type of question am home studying

Reply 6

RDKGames

Study Forum Helper

Original post by chilli17

OK getting there correct answers now

Using the formula y - s = f(x - t) [t/s]

Is there a YouTube video with this type of question am home studying

A bunch of them, but here's one I randomly plucked out:

[video="youtube;3rnpLI8rVb4"]https://www.youtube.com/watch?v=3rnpLI8rVb4[/video]

Reply 7

chilli17

Next question I get wrong answer to part 3

Reply 8

RDKGames

Study Forum Helper

Original post by chilli17

Next question I get wrong answer to part 3

That means 3x gets mapped onto

3(x-b)

since

x \mapsto (x-b)

from that translation.

Now since

3x-3=3(x-b)

, you can easily find b if it's not obvious from inspection.

(edited 6 years ago)

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Simple translation vector question

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