Search -z-z-i-m-not-sure-how-to-solve-this-problem-it-has-absolute-value-signs-on-both-ends-and-a

# z z i m not sure how to solve this problem it has absolute value signs on both ends and a

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:) I was wondering in the equation z^4 = m/(square root of 2) + (m/(square root of 2)) i with the answer saying the second line is z = m cis (pi/4) where they got the 4 from. did they get it from z^4 or something? thanks!
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formation: x commuters rode neither trains nor buses, y rode trains, and z rode only trains. How many people rode the following? (a) trains and buses (b) only buses (c) buses (d) trains or buses I answered a easily but can't figure out b-d
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ly express whether a function is onto or one to one. For each of the functions below, indicate whether the function is onto, one-to-one, neither or both. If the function is not onto or not one-to-one, give an example showing why. (j) f: Z × Z → Z × Z, f(x, y) = (1-y, 1-x) (k) f: Z+ × Z+ → Z+, f(x, y) = 2x + y.
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

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