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Let F be a linear application of R 3 in R 3 such that F(x,y,z)=(2x, 4x-y, 2x+3y-z), then: a)F is injective but not overjective b)F

Let F be a linear application of R³ in R³ such that F(x,y,z)=(2x, 4x-y, 2x+3y-z), then:

a)F is injective but not overjective

b)F is surjective but not injective

c)F is neither injective nor overjective

d)F is an isomorphism

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