dados x= 2 0 -3 -1 , y= 5 0 -2 -1 , z= 4 0 +4 1 , calcule o valor de:

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dados x= 2⁰-3^-1, y= 5⁰-2^-1 , z= 4⁰+4¹, calcule o valor de:

A) x+y B) x-y C) x.y D) y/x

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Guest Feb 25, 2020

CPhill · Answer 1 · 2020-02-25T05:24:27

A) x + y = (2⁰ - 3^-1)+ (5⁰- 2^-1) = (1 - 1/3) + (1 - 1/2) = 2/3 + 1/2 = [ 2*2 + 1*3 ] / [ 2 * 3 ] = 7/6

B) x - y = (2⁰ - 3^{-1) -} (5⁰- 2^-1) = (1 - 1/3) - (1 - 1/2) = 2/3 - 1/2 = [ 2*2 - 1*3 ]/ [ 2 * 3 ] = 1/6

C) x * y = (2/3)(1/2) = 1/3

D) y / x = (1/2) / (2/3) = (1/2) * (3/2) = 3/4