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For Exercises 13-18, determine whether A and B are inverse. (See Example 2)
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College Algebra (Collegiate Math)
- Which of the following does not have multiplicative inverses? a. 11mod5 b. 9mod4 c. 12mod7 d. 7mod6 a b darrow_forwardLet a=⟨−2,3,4⟩, b=⟨4,5,−2⟩, and c=⟨2,0,1⟩. Determine [(a×b)×c]−[a×(b×c)]. Hint: Try to simplify the expression first to make the calculations easier! Select one: a. ⟨20,−10,−16⟩ b. ⟨12,13,6⟩ c. ⟨24,−5,−18⟩ d. ⟨12,−18,−24⟩ e. ⟨10,−18,−25⟩arrow_forwardwhy it is 7rad over 4??arrow_forward
- Find the products AB and BA to determine whether B is the multiplicative inverse of A. - 1 4[443] B = -2 -2 A = AB= BA= 1 Yes No - Is B the multiplicative inverse of A?arrow_forwardEvaluate: 3x22xy+6y2 when x=1,y=2 .arrow_forwardIn Exercises 3-5, perform the operation(s) and simplify the result. 4x2x+32xarrow_forward
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