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18.09.2019 •
Mathematics
Plz awnser ! it's almost tomorrow need to know the fraction and decimal to 1- plz quick plzzz i'll give u 30
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Ответ:
Ответ:
a) (-2,-6)
b) (3, -5)
c) (3 ,2)
d) (8,-9)
Step-by-step explanation:
a) You have to use the Rotation Matrix, which is
and it has to be multiplied by (x,y) which is equal to (2,6)
Then after the multiplication you´ll obtain (-2,-6)
b) You have to use the Rotation Matrix which is
and multiplied for the vector (5,3) you´ll obtain (3, -5)
c) The Rotation Matrix for a rotation of 90° is given by
and again after the multiplication you´ll obtain (3,2)
d) The Rotation Matrix is given by
hence after the multiplication fo the roation matrix and the vector you´ll obtain (8,-9)
The answer of 5 and 6 is the matrix that I already wrote down on the excercises.