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B If \( S \) and \( T: R^{2} \rightarrow R^{2} \) are a linear transformation defined as \( S(x, y)= \) \( (0, x+y) \) and \( T(x, y)=(2 x, 3 y) \). Find \( S+T(x, y) \) and \( T(u-2 v) \) if \( u=(-1,5) \& v=(6,-3) \).

Answer»

S(x, y) = (0, x + y)

T(x, y) = (2x , 3y)

(S + T) (x, y) = S(x, y) + T(x, y)

\(\)= (0, x + y) + (2x, 3y)

= (2x, x + 4y)

U = (-1 , 5)

V = (6, -3)

U - 2V = (-1, 5) - 2(6, -3)

= (-1 -12, 5 + 6)

= (-13, 11)

T(U - 2V) = T(-13, 11) = (-26, 33).



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