16. Let R* be the multiplicative group of non zero real numbers and let S =R-{-1} be the group under the operation defined by aab=a+b+ ab. Define the mapping f: R* S by f(r) = r - 1. Show that R* = S.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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16.
Let R* be the multiplicative group of non zero real numbers and let S=R-{-1} be
the group under the operation defined by
aab=a+b + ab.
Define the mapping f: R*
-
S by f(r) = r - 1. Show that R* = S.
Transcribed Image Text:16. Let R* be the multiplicative group of non zero real numbers and let S=R-{-1} be the group under the operation defined by aab=a+b + ab. Define the mapping f: R* - S by f(r) = r - 1. Show that R* = S.
13.
Let ne Z* and G=GL(R) the multiplicative group of all invertible nxn matrices over
R. Show that
H = {A E G | det A = 1}
is a subgroup of G.
9
Transcribed Image Text:13. Let ne Z* and G=GL(R) the multiplicative group of all invertible nxn matrices over R. Show that H = {A E G | det A = 1} is a subgroup of G. 9
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