What are the coordinates of V′ after the transformation (T ◦ D5)(ΔTUV) for T(–1, –1), U(–1, 2), V(2, 1)?
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Use the distance formula
The decimal representation of any number is a linear combination of powers of 10. In other words, given a number like 123.456, we can expand it as
for any
, so the above is the same as
Similarly, we can write
Now it's a question of reducing the fraction as much as possible. We have so