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Let * be the operation on the set of real number defined by a * b = 2a + 4b – ab. (a * b) * c = А. 2а + 4с - ас В. 2ас + 4bс- abe C. 4a + 8b + 4c – 2ab – 2ac –- 4bc + abc D. 4a + 8b + 4c – 2ab – 2a – 4b + abc E. None of the given.

Let * be the operation on the set of real number defined by a * b = 2a + 4b – ab. (a * b) * c = А. 2а + 4с - ас В. 2ас + 4bс- abe C. 4a + 8b + 4c – 2ab – 2ac –- 4bc + abc D. 4a + 8b + 4c – 2ab – 2a – 4b + abc E. None of the given.

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Let * be the operation on the set of real number defined by a * b = 2a + 46 – ab. (a * b) * c = А. 2а + 4с В. 2ас + 4bс ас - abc C. 4a + 8b + 4c – 2ab – 2ac – 4bc + abc D. 4a + 8b + 4c – 2ab – 2a – 4b + abc E. None of the given.
Transcribed Image Text:Let * be the operation on the set of real number defined by a * b = 2a + 46 – ab. (a * b) * c = А. 2а + 4с В. 2ас + 4bс ас - abc C. 4a + 8b + 4c – 2ab – 2ac – 4bc + abc D. 4a + 8b + 4c – 2ab – 2a – 4b + abc E. None of the given.
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