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A rectangle A B C D , where A-=(0,0),B-=...

A rectangle `A B C D ,` where `A-=(0,0),B-=(4,0),C-=(4,2)D-=(0,2)` , undergoes the following transformations successively: `f_1(x ,y)vec(y ,x)` `f_2(x , y)vec(x+3y ,y)` `f_3(x , y)vec((x-y)//2),(x+y)//2)` The final figure will be square (b) a rhombus a rectangle (d) a parallelogram

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